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Finding the Fourth Proportional to 42,481.68, 63,724.68 and 16,181.52

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Solution

The fourth proportional to 42,481.68, 63,724.68 and 16,181.52 is: 24,273.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,481.68 : 63,724.68 = 16,181.52 : x
  2. Step 2: Convert to fraction form
    42,481.68/63,724.68 = 16,181.52/x
  3. Step 3: Cross multiply
    42,481.68x = 63,724.68 × 16,181.52
  4. Step 4: Simplify right side
    42,481.68x = 1,031,162,183.91
  5. Step 5: Solve for x
    x = 1,031,162,183.91/42,481.68
  6. Step 6: Final answer
    x = 24,273.10

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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.