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Finding the Fourth Proportional to 87,645.80, 131,468.70 and 73,065.80

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Solution

The fourth proportional to 87,645.80, 131,468.70 and 73,065.80 is: 109,598.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,645.80 : 131,468.70 = 73,065.80 : x
  2. Step 2: Convert to fraction form
    87,645.80/131,468.70 = 73,065.80/x
  3. Step 3: Cross multiply
    87,645.80x = 131,468.70 × 73,065.80
  4. Step 4: Simplify right side
    87,645.80x = 9,605,865,740.46
  5. Step 5: Solve for x
    x = 9,605,865,740.46/87,645.80
  6. Step 6: Final answer
    x = 109,598.70

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