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Finding the Fourth Proportional to 91,873.78, 126,793.17 and 51,590.22

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Solution

The fourth proportional to 91,873.78, 126,793.17 and 51,590.22 is: 71,198.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,873.78 : 126,793.17 = 51,590.22 : x
  2. Step 2: Convert to fraction form
    91,873.78/126,793.17 = 51,590.22/x
  3. Step 3: Cross multiply
    91,873.78x = 126,793.17 × 51,590.22
  4. Step 4: Simplify right side
    91,873.78x = 6,541,287,534.80
  5. Step 5: Solve for x
    x = 6,541,287,534.80/91,873.78
  6. Step 6: Final answer
    x = 71,198.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.