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Finding the Fourth Proportional to 79,739.97, 119,683.76 and 40,324.76

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Solution

The fourth proportional to 79,739.97, 119,683.76 and 40,324.76 is: 60,524.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,739.97 : 119,683.76 = 40,324.76 : x
  2. Step 2: Convert to fraction form
    79,739.97/119,683.76 = 40,324.76/x
  3. Step 3: Cross multiply
    79,739.97x = 119,683.76 × 40,324.76
  4. Step 4: Simplify right side
    79,739.97x = 4,826,218,897.90
  5. Step 5: Solve for x
    x = 4,826,218,897.90/79,739.97
  6. Step 6: Final answer
    x = 60,524.46

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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.