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Finding the Fourth Proportional to 72,432.40, 108,648.60 and 62,712.40

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Solution

The fourth proportional to 72,432.40, 108,648.60 and 62,712.40 is: 94,068.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,432.40 : 108,648.60 = 62,712.40 : x
  2. Step 2: Convert to fraction form
    72,432.40/108,648.60 = 62,712.40/x
  3. Step 3: Cross multiply
    72,432.40x = 108,648.60 × 62,712.40
  4. Step 4: Simplify right side
    72,432.40x = 6,813,614,462.64
  5. Step 5: Solve for x
    x = 6,813,614,462.64/72,432.40
  6. Step 6: Final answer
    x = 94,068.60

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