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Finding the Third Proportional to 13,212.94 and 20,463

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Solution

The third proportional to 13,212.94 and 20,463 is: 31,691.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,212.94 : 20,463 = 20,463 : x
  2. Step 2: Convert to fraction form
    13,212.94/20,463 = 20,463/x
  3. Step 3: Cross multiply
    13,212.94x = 20,463 × 20,463
  4. Step 4: Simplify right side
    13,212.94x = 418,734,369
  5. Step 5: Solve for x
    x = 418,734,369/13,212.94
  6. Step 6: Final answer
    x = 31,691.24

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.