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Finding the Fourth Proportional to 85,993.82, 129,027.69 and 44,469.98

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Solution

The fourth proportional to 85,993.82, 129,027.69 and 44,469.98 is: 66,724.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,993.82 : 129,027.69 = 44,469.98 : x
  2. Step 2: Convert to fraction form
    85,993.82/129,027.69 = 44,469.98/x
  3. Step 3: Cross multiply
    85,993.82x = 129,027.69 × 44,469.98
  4. Step 4: Simplify right side
    85,993.82x = 5,737,858,793.75
  5. Step 5: Solve for x
    x = 5,737,858,793.75/85,993.82
  6. Step 6: Final answer
    x = 66,724.08

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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.