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Finding the Fourth Proportional to 10,393.80, 15,589.20 and 3,372.92

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Solution

The fourth proportional to 10,393.80, 15,589.20 and 3,372.92 is: 5,058.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,393.80 : 15,589.20 = 3,372.92 : x
  2. Step 2: Convert to fraction form
    10,393.80/15,589.20 = 3,372.92/x
  3. Step 3: Cross multiply
    10,393.80x = 15,589.20 × 3,372.92
  4. Step 4: Simplify right side
    10,393.80x = 52,581,124.46
  5. Step 5: Solve for x
    x = 52,581,124.46/10,393.80
  6. Step 6: Final answer
    x = 5,058.89

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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.