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Finding the Fourth Proportional to 138,112.52, 206,917.98 and 63,294.92

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Solution

The fourth proportional to 138,112.52, 206,917.98 and 63,294.92 is: 94,827.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,112.52 : 206,917.98 = 63,294.92 : x
  2. Step 2: Convert to fraction form
    138,112.52/206,917.98 = 63,294.92/x
  3. Step 3: Cross multiply
    138,112.52x = 206,917.98 × 63,294.92
  4. Step 4: Simplify right side
    138,112.52x = 13,096,856,990.66
  5. Step 5: Solve for x
    x = 13,096,856,990.66/138,112.52
  6. Step 6: Final answer
    x = 94,827.44

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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.