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Finding the Fourth Proportional to 21,793.92, 32,691.12 and 16,318.56

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Solution

The fourth proportional to 21,793.92, 32,691.12 and 16,318.56 is: 24,478.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,793.92 : 32,691.12 = 16,318.56 : x
  2. Step 2: Convert to fraction form
    21,793.92/32,691.12 = 16,318.56/x
  3. Step 3: Cross multiply
    21,793.92x = 32,691.12 × 16,318.56
  4. Step 4: Simplify right side
    21,793.92x = 533,472,003.19
  5. Step 5: Solve for x
    x = 533,472,003.19/21,793.92
  6. Step 6: Final answer
    x = 24,478.02

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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.