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Finding the Fourth Proportional to 10,424.82, 15,640.86 and 4,581.88

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Solution

The fourth proportional to 10,424.82, 15,640.86 and 4,581.88 is: 6,874.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,424.82 : 15,640.86 = 4,581.88 : x
  2. Step 2: Convert to fraction form
    10,424.82/15,640.86 = 4,581.88/x
  3. Step 3: Cross multiply
    10,424.82x = 15,640.86 × 4,581.88
  4. Step 4: Simplify right side
    10,424.82x = 71,664,543.62
  5. Step 5: Solve for x
    x = 71,664,543.62/10,424.82
  6. Step 6: Final answer
    x = 6,874.42

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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.