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Finding the Fourth Proportional to 63,291.92, 94,902.34 and 21,149.80

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Solution

The fourth proportional to 63,291.92, 94,902.34 and 21,149.80 is: 31,712.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,291.92 : 94,902.34 = 21,149.80 : x
  2. Step 2: Convert to fraction form
    63,291.92/94,902.34 = 21,149.80/x
  3. Step 3: Cross multiply
    63,291.92x = 94,902.34 × 21,149.80
  4. Step 4: Simplify right side
    63,291.92x = 2,007,165,510.53
  5. Step 5: Solve for x
    x = 2,007,165,510.53/63,291.92
  6. Step 6: Final answer
    x = 31,712.82

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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.