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Finding the Fourth Proportional to 79,521.62, 109,737.38 and 43,711.52

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Solution

The fourth proportional to 79,521.62, 109,737.38 and 43,711.52 is: 60,320.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,521.62 : 109,737.38 = 43,711.52 : x
  2. Step 2: Convert to fraction form
    79,521.62/109,737.38 = 43,711.52/x
  3. Step 3: Cross multiply
    79,521.62x = 109,737.38 × 43,711.52
  4. Step 4: Simplify right side
    79,521.62x = 4,796,787,241.21
  5. Step 5: Solve for x
    x = 4,796,787,241.21/79,521.62
  6. Step 6: Final answer
    x = 60,320.55

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Why These Related Problems?

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