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      Question

      What is the third proportion for 14 and

      21?
      A 35.2 Correct Answer Incorrect Answer
      B 31.5 Correct Answer Incorrect Answer
      C 54.4 Correct Answer Incorrect Answer
      D 80.7 Correct Answer Incorrect Answer

      Solution

      ATQ,

      Third proportion of 'a' and 'b' = (bΒ² / a)

      So, third proportion = (21Β² / 14) = (441 / 14) = 31.5

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