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Finding the Fourth Proportional to 71,936.82, 99,350.26 and 54,757.80

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Solution

The fourth proportional to 71,936.82, 99,350.26 and 54,757.80 is: 75,624.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,936.82 : 99,350.26 = 54,757.80 : x
  2. Step 2: Convert to fraction form
    71,936.82/99,350.26 = 54,757.80/x
  3. Step 3: Cross multiply
    71,936.82x = 99,350.26 × 54,757.80
  4. Step 4: Simplify right side
    71,936.82x = 5,440,201,667.03
  5. Step 5: Solve for x
    x = 5,440,201,667.03/71,936.82
  6. Step 6: Final answer
    x = 75,624.72

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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.