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Finding the Fourth Proportional to 83,251.20, 124,876.80 and 77,346.30

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Solution

The fourth proportional to 83,251.20, 124,876.80 and 77,346.30 is: 116,019.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,251.20 : 124,876.80 = 77,346.30 : x
  2. Step 2: Convert to fraction form
    83,251.20/124,876.80 = 77,346.30/x
  3. Step 3: Cross multiply
    83,251.20x = 124,876.80 × 77,346.30
  4. Step 4: Simplify right side
    83,251.20x = 9,658,758,435.84
  5. Step 5: Solve for x
    x = 9,658,758,435.84/83,251.20
  6. Step 6: Final answer
    x = 116,019.45

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