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Finding the Fourth Proportional to 69,358.96, 103,988.76 and 29,380.64

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Solution

The fourth proportional to 69,358.96, 103,988.76 and 29,380.64 is: 44,049.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,358.96 : 103,988.76 = 29,380.64 : x
  2. Step 2: Convert to fraction form
    69,358.96/103,988.76 = 29,380.64/x
  3. Step 3: Cross multiply
    69,358.96x = 103,988.76 × 29,380.64
  4. Step 4: Simplify right side
    69,358.96x = 3,055,256,321.61
  5. Step 5: Solve for x
    x = 3,055,256,321.61/69,358.96
  6. Step 6: Final answer
    x = 44,049.92

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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.