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Finding the Fourth Proportional to 91,708.30, 137,562.45 and 80,044.30

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Solution

The fourth proportional to 91,708.30, 137,562.45 and 80,044.30 is: 120,066.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,708.30 : 137,562.45 = 80,044.30 : x
  2. Step 2: Convert to fraction form
    91,708.30/137,562.45 = 80,044.30/x
  3. Step 3: Cross multiply
    91,708.30x = 137,562.45 × 80,044.30
  4. Step 4: Simplify right side
    91,708.30x = 11,011,090,016.54
  5. Step 5: Solve for x
    x = 11,011,090,016.54/91,708.30
  6. Step 6: Final answer
    x = 120,066.45

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