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Finding the Fourth Proportional to 5,079.27, 7,621.17 and 3,229.90

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Solution

The fourth proportional to 5,079.27, 7,621.17 and 3,229.90 is: 4,846.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,079.27 : 7,621.17 = 3,229.90 : x
  2. Step 2: Convert to fraction form
    5,079.27/7,621.17 = 3,229.90/x
  3. Step 3: Cross multiply
    5,079.27x = 7,621.17 × 3,229.90
  4. Step 4: Simplify right side
    5,079.27x = 24,615,616.98
  5. Step 5: Solve for x
    x = 24,615,616.98/5,079.27
  6. Step 6: Final answer
    x = 4,846.29

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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.