If a: b = 10: 9, b: c = 17: 12, find a: b: c?	Choose the correct choice from the following answers:	A) 150: 143: 118	B) 160: 173: 128	C) 170: 153: 108	D) 180: 163: 138	E) 190: 183: 148
a: b = 10: 9   b: c = 17: 12   a: b: c = 170: 153: 108   ANSWER:170: 153: 108
<result>C</result>
If a: b = 10: 9, b: c = 17: 12, find a: b: c?