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Finding the Fourth Proportional to 79,221.26, 118,751.92 and 49,659.85

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Solution

The fourth proportional to 79,221.26, 118,751.92 and 49,659.85 is: 74,439.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,221.26 : 118,751.92 = 49,659.85 : x
  2. Step 2: Convert to fraction form
    79,221.26/118,751.92 = 49,659.85/x
  3. Step 3: Cross multiply
    79,221.26x = 118,751.92 × 49,659.85
  4. Step 4: Simplify right side
    79,221.26x = 5,897,202,838.04
  5. Step 5: Solve for x
    x = 5,897,202,838.04/79,221.26
  6. Step 6: Final answer
    x = 74,439.65

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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.