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Finding the Fourth Proportional to 83,693.20, 125,539.80 and 82,818.40

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Solution

The fourth proportional to 83,693.20, 125,539.80 and 82,818.40 is: 124,227.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,693.20 : 125,539.80 = 82,818.40 : x
  2. Step 2: Convert to fraction form
    83,693.20/125,539.80 = 82,818.40/x
  3. Step 3: Cross multiply
    83,693.20x = 125,539.80 × 82,818.40
  4. Step 4: Simplify right side
    83,693.20x = 10,397,005,372.32
  5. Step 5: Solve for x
    x = 10,397,005,372.32/83,693.20
  6. Step 6: Final answer
    x = 124,227.60

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