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January 30, 2015

January 30, 2015

Posted by **Milly** on Monday, November 22, 2010 at 7:22pm.

- Algebra -
**Brooke**, Monday, November 22, 2010 at 8:14pmSimilar are proportional.

12 is to a as 3c is to c

cross product 12c = 3ac

divide both sides by 3c and a = 4

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