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Finding the Fourth Proportional to 129,224.48, 193,638.87 and 86,947.97

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Solution

The fourth proportional to 129,224.48, 193,638.87 and 86,947.97 is: 130,288.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,224.48 : 193,638.87 = 86,947.97 : x
  2. Step 2: Convert to fraction form
    129,224.48/193,638.87 = 86,947.97/x
  3. Step 3: Cross multiply
    129,224.48x = 193,638.87 × 86,947.97
  4. Step 4: Simplify right side
    129,224.48x = 16,836,505,691.40
  5. Step 5: Solve for x
    x = 16,836,505,691.40/129,224.48
  6. Step 6: Final answer
    x = 130,288.83

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