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Finding the Third Proportional to 20,239.50 and 41,451

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Solution

The third proportional to 20,239.50 and 41,451 is: 84,892.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,239.50 : 41,451 = 41,451 : x
  2. Step 2: Convert to fraction form
    20,239.50/41,451 = 41,451/x
  3. Step 3: Cross multiply
    20,239.50x = 41,451 × 41,451
  4. Step 4: Simplify right side
    20,239.50x = 1,718,185,401
  5. Step 5: Solve for x
    x = 1,718,185,401/20,239.50
  6. Step 6: Final answer
    x = 84,892.68

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.