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Finding the Third Proportional to 38,556 and 80,190

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Solution

The third proportional to 38,556 and 80,190 is: 166,781.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,556 : 80,190 = 80,190 : x
  2. Step 2: Convert to fraction form
    38,556/80,190 = 80,190/x
  3. Step 3: Cross multiply
    38,556x = 80,190 × 80,190
  4. Step 4: Simplify right side
    38,556x = 6,430,436,100
  5. Step 5: Solve for x
    x = 6,430,436,100/38,556
  6. Step 6: Final answer
    x = 166,781.72

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.