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Finding the Fourth Proportional to 9,255.92, 12,772.85 and 5,278.31

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Solution

The fourth proportional to 9,255.92, 12,772.85 and 5,278.31 is: 7,283.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,255.92 : 12,772.85 = 5,278.31 : x
  2. Step 2: Convert to fraction form
    9,255.92/12,772.85 = 5,278.31/x
  3. Step 3: Cross multiply
    9,255.92x = 12,772.85 × 5,278.31
  4. Step 4: Simplify right side
    9,255.92x = 67,419,003.56
  5. Step 5: Solve for x
    x = 67,419,003.56/9,255.92
  6. Step 6: Final answer
    x = 7,283.88

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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.