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Finding the Fourth Proportional to 28,737.69, 39,648.76 and 17,403.55

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Solution

The fourth proportional to 28,737.69, 39,648.76 and 17,403.55 is: 24,011.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,737.69 : 39,648.76 = 17,403.55 : x
  2. Step 2: Convert to fraction form
    28,737.69/39,648.76 = 17,403.55/x
  3. Step 3: Cross multiply
    28,737.69x = 39,648.76 × 17,403.55
  4. Step 4: Simplify right side
    28,737.69x = 690,029,177.10
  5. Step 5: Solve for x
    x = 690,029,177.10/28,737.69
  6. Step 6: Final answer
    x = 24,011.30

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.