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Finding the Fourth Proportional to 72,675.91, 108,947.85 and 25,917.85

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Solution

The fourth proportional to 72,675.91, 108,947.85 and 25,917.85 is: 38,853.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,675.91 : 108,947.85 = 25,917.85 : x
  2. Step 2: Convert to fraction form
    72,675.91/108,947.85 = 25,917.85/x
  3. Step 3: Cross multiply
    72,675.91x = 108,947.85 × 25,917.85
  4. Step 4: Simplify right side
    72,675.91x = 2,823,694,034.12
  5. Step 5: Solve for x
    x = 2,823,694,034.12/72,675.91
  6. Step 6: Final answer
    x = 38,853.23

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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.