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Finding the Fourth Proportional to 79,711.48, 110,017.61 and 45,741.90

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Solution

The fourth proportional to 79,711.48, 110,017.61 and 45,741.90 is: 63,132.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,711.48 : 110,017.61 = 45,741.90 : x
  2. Step 2: Convert to fraction form
    79,711.48/110,017.61 = 45,741.90/x
  3. Step 3: Cross multiply
    79,711.48x = 110,017.61 × 45,741.90
  4. Step 4: Simplify right side
    79,711.48x = 5,032,414,514.86
  5. Step 5: Solve for x
    x = 5,032,414,514.86/79,711.48
  6. Step 6: Final answer
    x = 63,132.87

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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.