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Finding the Third Proportional to 38,515.50 and 80,757

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Solution

The third proportional to 38,515.50 and 80,757 is: 169,326.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,515.50 : 80,757 = 80,757 : x
  2. Step 2: Convert to fraction form
    38,515.50/80,757 = 80,757/x
  3. Step 3: Cross multiply
    38,515.50x = 80,757 × 80,757
  4. Step 4: Simplify right side
    38,515.50x = 6,521,693,049
  5. Step 5: Solve for x
    x = 6,521,693,049/38,515.50
  6. Step 6: Final answer
    x = 169,326.45

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.