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Finding the Fourth Proportional to 67,132.78, 100,480.14 and 49,358.74

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Solution

The fourth proportional to 67,132.78, 100,480.14 and 49,358.74 is: 73,877.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,132.78 : 100,480.14 = 49,358.74 : x
  2. Step 2: Convert to fraction form
    67,132.78/100,480.14 = 49,358.74/x
  3. Step 3: Cross multiply
    67,132.78x = 100,480.14 × 49,358.74
  4. Step 4: Simplify right side
    67,132.78x = 4,959,573,105.42
  5. Step 5: Solve for x
    x = 4,959,573,105.42/67,132.78
  6. Step 6: Final answer
    x = 73,877.07

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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.