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Finding the Fourth Proportional to 10,335.33, 15,489.11 and 5,648.31

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Solution

The fourth proportional to 10,335.33, 15,489.11 and 5,648.31 is: 8,464.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,335.33 : 15,489.11 = 5,648.31 : x
  2. Step 2: Convert to fraction form
    10,335.33/15,489.11 = 5,648.31/x
  3. Step 3: Cross multiply
    10,335.33x = 15,489.11 × 5,648.31
  4. Step 4: Simplify right side
    10,335.33x = 87,487,309.02
  5. Step 5: Solve for x
    x = 87,487,309.02/10,335.33
  6. Step 6: Final answer
    x = 8,464.88

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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.