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Finding the Third Proportional to 5,682 and 12,215

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Solution

The third proportional to 5,682 and 12,215 is: 26,259.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,682 : 12,215 = 12,215 : x
  2. Step 2: Convert to fraction form
    5,682/12,215 = 12,215/x
  3. Step 3: Cross multiply
    5,682x = 12,215 × 12,215
  4. Step 4: Simplify right side
    5,682x = 149,206,225
  5. Step 5: Solve for x
    x = 149,206,225/5,682
  6. Step 6: Final answer
    x = 26,259.46

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.