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Finding the Fourth Proportional to 79,452.80, 109,648.31 and 45,471.95

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Solution

The fourth proportional to 79,452.80, 109,648.31 and 45,471.95 is: 62,753.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,452.80 : 109,648.31 = 45,471.95 : x
  2. Step 2: Convert to fraction form
    79,452.80/109,648.31 = 45,471.95/x
  3. Step 3: Cross multiply
    79,452.80x = 109,648.31 × 45,471.95
  4. Step 4: Simplify right side
    79,452.80x = 4,985,922,469.90
  5. Step 5: Solve for x
    x = 4,985,922,469.90/79,452.80
  6. Step 6: Final answer
    x = 62,753.26

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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.