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Finding the Fourth Proportional to 43,474.33, 65,220.85 and 13,487.97

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Solution

The fourth proportional to 43,474.33, 65,220.85 and 13,487.97 is: 20,234.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,474.33 : 65,220.85 = 13,487.97 : x
  2. Step 2: Convert to fraction form
    43,474.33/65,220.85 = 13,487.97/x
  3. Step 3: Cross multiply
    43,474.33x = 65,220.85 × 13,487.97
  4. Step 4: Simplify right side
    43,474.33x = 879,696,868.17
  5. Step 5: Solve for x
    x = 879,696,868.17/43,474.33
  6. Step 6: Final answer
    x = 20,234.86

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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.