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Finding the Fourth Proportional to 116,712.90, 161,061.62 and 71,387.55

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Solution

The fourth proportional to 116,712.90, 161,061.62 and 71,387.55 is: 98,513.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,712.90 : 161,061.62 = 71,387.55 : x
  2. Step 2: Convert to fraction form
    116,712.90/161,061.62 = 71,387.55/x
  3. Step 3: Cross multiply
    116,712.90x = 161,061.62 × 71,387.55
  4. Step 4: Simplify right side
    116,712.90x = 11,497,794,546.88
  5. Step 5: Solve for x
    x = 11,497,794,546.88/116,712.90
  6. Step 6: Final answer
    x = 98,513.49

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