Find all values ​​of $ r$ such that the inequality $$r (ab + bc + ca) + (3- r) \left( \frac{1}{a}+\frac{1}{b}+\frac{1}{c} \right) \ge 9$$
is true for $a,b,c$ arbitrary positive reals
1. We start with the given inequality:
   \[
   r (ab + bc + ca) + (3 - r) \left( \frac{1}{a} + \frac{1}{b} + \frac{1}{c} \right) \ge 9
   \]
   for arbitrary positive reals \(a, b, c\).

2. To find the range of \(r\), we test specific values of \(a, b,\) and \(c\). Let \(b = c = 1\) and \(a = \sqrt{\frac{3 - r}{2r}}\).

3. Substitute \(b = c = 1\) and \(a = \sqrt{\frac{3 - r}{2r}}\) into the inequality:
   \[
   r (2a + 1) + (3 - r) \left( \frac{1}{a} + 2 \right)
   \]

4. Simplify the expression:
   \[
   r (2a + 1) + (3 - r) \left( \frac{1}{a} + 2 \right) = 2ar + r + \frac{3 - r}{a} + 2(3 - r)
   \]
   \[
   = 2ar + r + \frac{3 - r}{a} + 6 - 2r
   \]
   \[
   = 2ar + \frac{3 - r}{a} + 6 - r
   \]

5. Substitute \(a = \sqrt{\frac{3 - r}{2r}}\):
   \[
   2r \sqrt{\frac{3 - r}{2r}} + \frac{3 - r}{\sqrt{\frac{3 - r}{2r}}} + 6 - r
   \]
   \[
   = 2r \sqrt{\frac{3 - r}{2r}} + \sqrt{\frac{2r(3 - r)}{3 - r}} + 6 - r
   \]
   \[
   = 2r \sqrt{\frac{3 - r}{2r}} + \sqrt{2r(3 - r)} + 6 - r
   \]
   \[
   = 2 \sqrt{2r(3 - r)} + 6 - r
   \]

6. To ensure the inequality holds, we need:
   \[
   2 \sqrt{2r(3 - r)} + 6 - r \leq 9
   \]

7. Simplify the inequality:
   \[
   2 \sqrt{2r(3 - r)} \leq 3 + r
   \]

8. Square both sides to remove the square root:
   \[
   4 \cdot 2r(3 - r) \leq (3 + r)^2
   \]
   \[
   8r(3 - r) \leq 9 + 6r + r^2
   \]
   \[
   24r - 8r^2 \leq 9 + 6r + r^2
   \]
   \[
   0 \leq 9 + 6r + r^2 - 24r + 8r^2
   \]
   \[
   0 \leq 9r^2 - 18r + 9
   \]
   \[
   0 \leq 9(r^2 - 2r + 1)
   \]
   \[
   0 \leq 9(r - 1)^2
   \]

9. Since \((r - 1)^2 \geq 0\) for all real \(r\), the inequality holds for all \(r\).

10. Therefore, the inequality is true for \(0 < r < 3\) with equality at \(r = 1\).

The final answer is \( \boxed{ 0 < r < 3 } \)