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Finding the Fourth Proportional to 87,652.80, 131,479.20 and 73,072.80

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Solution

The fourth proportional to 87,652.80, 131,479.20 and 73,072.80 is: 109,609.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,652.80 : 131,479.20 = 73,072.80 : x
  2. Step 2: Convert to fraction form
    87,652.80/131,479.20 = 73,072.80/x
  3. Step 3: Cross multiply
    87,652.80x = 131,479.20 × 73,072.80
  4. Step 4: Simplify right side
    87,652.80x = 9,607,553,285.76
  5. Step 5: Solve for x
    x = 9,607,553,285.76/87,652.80
  6. Step 6: Final answer
    x = 109,609.20

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