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Finding the Fourth Proportional to 68,470.25, 102,789.95 and 32,481.12

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Solution

The fourth proportional to 68,470.25, 102,789.95 and 32,481.12 is: 48,761.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,470.25 : 102,789.95 = 32,481.12 : x
  2. Step 2: Convert to fraction form
    68,470.25/102,789.95 = 32,481.12/x
  3. Step 3: Cross multiply
    68,470.25x = 102,789.95 × 32,481.12
  4. Step 4: Simplify right side
    68,470.25x = 3,338,732,024.39
  5. Step 5: Solve for x
    x = 3,338,732,024.39/68,470.25
  6. Step 6: Final answer
    x = 48,761.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.