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Finding the Fourth Proportional to 79,249.20, 118,793.84 and 49,687.80

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Solution

The fourth proportional to 79,249.20, 118,793.84 and 49,687.80 is: 74,481.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,249.20 : 118,793.84 = 49,687.80 : x
  2. Step 2: Convert to fraction form
    79,249.20/118,793.84 = 49,687.80/x
  3. Step 3: Cross multiply
    79,249.20x = 118,793.84 × 49,687.80
  4. Step 4: Simplify right side
    79,249.20x = 5,902,604,563.15
  5. Step 5: Solve for x
    x = 5,902,604,563.15/79,249.20
  6. Step 6: Final answer
    x = 74,481.57

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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.