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Finding the Fourth Proportional to 72,554.85, 108,766.66 and 25,796.79

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Solution

The fourth proportional to 72,554.85, 108,766.66 and 25,796.79 is: 38,671.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,554.85 : 108,766.66 = 25,796.79 : x
  2. Step 2: Convert to fraction form
    72,554.85/108,766.66 = 25,796.79/x
  3. Step 3: Cross multiply
    72,554.85x = 108,766.66 × 25,796.79
  4. Step 4: Simplify right side
    72,554.85x = 2,805,830,687.02
  5. Step 5: Solve for x
    x = 2,805,830,687.02/72,554.85
  6. Step 6: Final answer
    x = 38,671.86

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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.