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Finding the Fourth Proportional to 11,472.80, 15,832.20 and 6,436.92

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Solution

The fourth proportional to 11,472.80, 15,832.20 and 6,436.92 is: 8,882.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,472.80 : 15,832.20 = 6,436.92 : x
  2. Step 2: Convert to fraction form
    11,472.80/15,832.20 = 6,436.92/x
  3. Step 3: Cross multiply
    11,472.80x = 15,832.20 × 6,436.92
  4. Step 4: Simplify right side
    11,472.80x = 101,910,604.82
  5. Step 5: Solve for x
    x = 101,910,604.82/11,472.80
  6. Step 6: Final answer
    x = 8,882.81

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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.