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Finding the Third Proportional to 83,839 and 126,842

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Solution

The third proportional to 83,839 and 126,842 is: 191,902.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,839 : 126,842 = 126,842 : x
  2. Step 2: Convert to fraction form
    83,839/126,842 = 126,842/x
  3. Step 3: Cross multiply
    83,839x = 126,842 × 126,842
  4. Step 4: Simplify right side
    83,839x = 16,088,892,964
  5. Step 5: Solve for x
    x = 16,088,892,964/83,839
  6. Step 6: Final answer
    x = 191,902.25

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.