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Finding the Fourth Proportional to 79,255.74, 118,057.85 and 75,048.48

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Solution

The fourth proportional to 79,255.74, 118,057.85 and 75,048.48 is: 111,790.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,255.74 : 118,057.85 = 75,048.48 : x
  2. Step 2: Convert to fraction form
    79,255.74/118,057.85 = 75,048.48/x
  3. Step 3: Cross multiply
    79,255.74x = 118,057.85 × 75,048.48
  4. Step 4: Simplify right side
    79,255.74x = 8,860,061,819.33
  5. Step 5: Solve for x
    x = 8,860,061,819.33/79,255.74
  6. Step 6: Final answer
    x = 111,790.79

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.