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    Question

    Find x, if x, 4, 9, 12 are in proportion.

    1. 4
    2. 3
    3. 5
    4. 6

    The correct answer is: 3

      As x, 4, 9, 12 are in proportion
      X:4 :: 9:12
      x/4 = 9/12
      x=(9*4)/12
      x= 3

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