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Finding the Third Proportional to 43,661 and 66,744

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Solution

The third proportional to 43,661 and 66,744 is: 102,030.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,661 : 66,744 = 66,744 : x
  2. Step 2: Convert to fraction form
    43,661/66,744 = 66,744/x
  3. Step 3: Cross multiply
    43,661x = 66,744 × 66,744
  4. Step 4: Simplify right side
    43,661x = 4,454,761,536
  5. Step 5: Solve for x
    x = 4,454,761,536/43,661
  6. Step 6: Final answer
    x = 102,030.68

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.