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Finding the Fourth Proportional to 9,503.92, 13,115.54 and 5,731.02

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Solution

The fourth proportional to 9,503.92, 13,115.54 and 5,731.02 is: 7,908.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,503.92 : 13,115.54 = 5,731.02 : x
  2. Step 2: Convert to fraction form
    9,503.92/13,115.54 = 5,731.02/x
  3. Step 3: Cross multiply
    9,503.92x = 13,115.54 × 5,731.02
  4. Step 4: Simplify right side
    9,503.92x = 75,165,422.05
  5. Step 5: Solve for x
    x = 75,165,422.05/9,503.92
  6. Step 6: Final answer
    x = 7,908.89

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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.