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Finding the Third Proportional to 38,449.50 and 82,731

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Solution

The third proportional to 38,449.50 and 82,731 is: 178,010.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,449.50 : 82,731 = 82,731 : x
  2. Step 2: Convert to fraction form
    38,449.50/82,731 = 82,731/x
  3. Step 3: Cross multiply
    38,449.50x = 82,731 × 82,731
  4. Step 4: Simplify right side
    38,449.50x = 6,844,418,361
  5. Step 5: Solve for x
    x = 6,844,418,361/38,449.50
  6. Step 6: Final answer
    x = 178,010.59

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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.