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Finding the Third Proportional to 38,791 and 83,521

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Solution

The third proportional to 38,791 and 83,521 is: 179,829.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,791 : 83,521 = 83,521 : x
  2. Step 2: Convert to fraction form
    38,791/83,521 = 83,521/x
  3. Step 3: Cross multiply
    38,791x = 83,521 × 83,521
  4. Step 4: Simplify right side
    38,791x = 6,975,757,441
  5. Step 5: Solve for x
    x = 6,975,757,441/38,791
  6. Step 6: Final answer
    x = 179,829.28

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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.