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Question

Find the Third proportion to 12 and 18.

  1. 23
  2. 27
  3. 25
  4. 29

The correct answer is: 27


    Third proportion to 12 and 18 means fourth proportion of 12, 18 and 18 12:18 :: 18:x 12x=18*18 X=(18*18)/12 X=27

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