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Finding the Third Proportional to 83,257.50 and 126,972

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Solution

The third proportional to 83,257.50 and 126,972 is: 193,638.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,257.50 : 126,972 = 126,972 : x
  2. Step 2: Convert to fraction form
    83,257.50/126,972 = 126,972/x
  3. Step 3: Cross multiply
    83,257.50x = 126,972 × 126,972
  4. Step 4: Simplify right side
    83,257.50x = 16,121,888,784
  5. Step 5: Solve for x
    x = 16,121,888,784/83,257.50
  6. Step 6: Final answer
    x = 193,638.88

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.