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Finding the Third Proportional to 38,674 and 81,924

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Solution

The third proportional to 38,674 and 81,924 is: 173,541.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,674 : 81,924 = 81,924 : x
  2. Step 2: Convert to fraction form
    38,674/81,924 = 81,924/x
  3. Step 3: Cross multiply
    38,674x = 81,924 × 81,924
  4. Step 4: Simplify right side
    38,674x = 6,711,541,776
  5. Step 5: Solve for x
    x = 6,711,541,776/38,674
  6. Step 6: Final answer
    x = 173,541.44

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.