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Finding the Third Proportional to 87,211.50 and 187,734

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Solution

The third proportional to 87,211.50 and 187,734 is: 404,121.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,211.50 : 187,734 = 187,734 : x
  2. Step 2: Convert to fraction form
    87,211.50/187,734 = 187,734/x
  3. Step 3: Cross multiply
    87,211.50x = 187,734 × 187,734
  4. Step 4: Simplify right side
    87,211.50x = 35,244,054,756
  5. Step 5: Solve for x
    x = 35,244,054,756/87,211.50
  6. Step 6: Final answer
    x = 404,121.64

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.