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Finding the Third Proportional to 38,760.50 and 79,166

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Solution

The third proportional to 38,760.50 and 79,166 is: 161,691.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,760.50 : 79,166 = 79,166 : x
  2. Step 2: Convert to fraction form
    38,760.50/79,166 = 79,166/x
  3. Step 3: Cross multiply
    38,760.50x = 79,166 × 79,166
  4. Step 4: Simplify right side
    38,760.50x = 6,267,255,556
  5. Step 5: Solve for x
    x = 6,267,255,556/38,760.50
  6. Step 6: Final answer
    x = 161,691.81

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.