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Finding the Third Proportional to 18,722 and 41,170

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Solution

The third proportional to 18,722 and 41,170 is: 90,533.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,722 : 41,170 = 41,170 : x
  2. Step 2: Convert to fraction form
    18,722/41,170 = 41,170/x
  3. Step 3: Cross multiply
    18,722x = 41,170 × 41,170
  4. Step 4: Simplify right side
    18,722x = 1,694,968,900
  5. Step 5: Solve for x
    x = 1,694,968,900/18,722
  6. Step 6: Final answer
    x = 90,533.54

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.