Thread: Cog ratios
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Old 07-09-10 | 03:13 PM
  #6  
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Originally Posted by RobertFrapples
45/17 = 51/x

(45/17)/51 = 1/x

51/(45/17) = x

x = 19.26666

19 is a bit taller, 20 a bit more lower.
Maths be gone!
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