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Finding the Fourth Proportional to 31,718.97, 43,772.15 and 17,379.70

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Solution

The fourth proportional to 31,718.97, 43,772.15 and 17,379.70 is: 23,983.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,718.97 : 43,772.15 = 17,379.70 : x
  2. Step 2: Convert to fraction form
    31,718.97/43,772.15 = 17,379.70/x
  3. Step 3: Cross multiply
    31,718.97x = 43,772.15 × 17,379.70
  4. Step 4: Simplify right side
    31,718.97x = 760,746,769.37
  5. Step 5: Solve for x
    x = 760,746,769.37/31,718.97
  6. Step 6: Final answer
    x = 23,983.97

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