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Finding the Fourth Proportional to 16,569.90, 24,978.92 and 15,469.92

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Solution

The fourth proportional to 16,569.90, 24,978.92 and 15,469.92 is: 23,320.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,569.90 : 24,978.92 = 15,469.92 : x
  2. Step 2: Convert to fraction form
    16,569.90/24,978.92 = 15,469.92/x
  3. Step 3: Cross multiply
    16,569.90x = 24,978.92 × 15,469.92
  4. Step 4: Simplify right side
    16,569.90x = 386,421,816.74
  5. Step 5: Solve for x
    x = 386,421,816.74/16,569.90
  6. Step 6: Final answer
    x = 23,320.71

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.