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Finding the Fourth Proportional to 67,066.92, 100,621.44 and 27,642.60

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Solution

The fourth proportional to 67,066.92, 100,621.44 and 27,642.60 is: 41,472.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,066.92 : 100,621.44 = 27,642.60 : x
  2. Step 2: Convert to fraction form
    67,066.92/100,621.44 = 27,642.60/x
  3. Step 3: Cross multiply
    67,066.92x = 100,621.44 × 27,642.60
  4. Step 4: Simplify right side
    67,066.92x = 2,781,438,217.34
  5. Step 5: Solve for x
    x = 2,781,438,217.34/67,066.92
  6. Step 6: Final answer
    x = 41,472.58

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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.