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Finding the Fourth Proportional to 71,612.27, 107,484.05 and 38,369.87

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Solution

The fourth proportional to 71,612.27, 107,484.05 and 38,369.87 is: 57,589.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,612.27 : 107,484.05 = 38,369.87 : x
  2. Step 2: Convert to fraction form
    71,612.27/107,484.05 = 38,369.87/x
  3. Step 3: Cross multiply
    71,612.27x = 107,484.05 × 38,369.87
  4. Step 4: Simplify right side
    71,612.27x = 4,124,148,833.72
  5. Step 5: Solve for x
    x = 4,124,148,833.72/71,612.27
  6. Step 6: Final answer
    x = 57,589.97

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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.