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Finding the Fourth Proportional to 126,761.53, 174,932.99 and 69,399.90

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Solution

The fourth proportional to 126,761.53, 174,932.99 and 69,399.90 is: 95,773.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,761.53 : 174,932.99 = 69,399.90 : x
  2. Step 2: Convert to fraction form
    126,761.53/174,932.99 = 69,399.90/x
  3. Step 3: Cross multiply
    126,761.53x = 174,932.99 × 69,399.90
  4. Step 4: Simplify right side
    126,761.53x = 12,140,332,012.70
  5. Step 5: Solve for x
    x = 12,140,332,012.70/126,761.53
  6. Step 6: Final answer
    x = 95,773.00

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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.