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Finding the Fourth Proportional to 98,132.80, 135,287.21 and 66,251.20

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Solution

The fourth proportional to 98,132.80, 135,287.21 and 66,251.20 is: 91,334.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,132.80 : 135,287.21 = 66,251.20 : x
  2. Step 2: Convert to fraction form
    98,132.80/135,287.21 = 66,251.20/x
  3. Step 3: Cross multiply
    98,132.80x = 135,287.21 × 66,251.20
  4. Step 4: Simplify right side
    98,132.80x = 8,962,940,007.15
  5. Step 5: Solve for x
    x = 8,962,940,007.15/98,132.80
  6. Step 6: Final answer
    x = 91,334.80

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