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Finding the Fourth Proportional to 80,555.72, 111,168.90 and 44,744

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Solution

The fourth proportional to 80,555.72, 111,168.90 and 44,744 is: 61,747.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,555.72 : 111,168.90 = 44,744 : x
  2. Step 2: Convert to fraction form
    80,555.72/111,168.90 = 44,744/x
  3. Step 3: Cross multiply
    80,555.72x = 111,168.90 × 44,744
  4. Step 4: Simplify right side
    80,555.72x = 4,974,141,261.60
  5. Step 5: Solve for x
    x = 4,974,141,261.60/80,555.72
  6. Step 6: Final answer
    x = 61,747.83

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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.