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Finding the Third Proportional to 5,516 and 12,124

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Solution

The third proportional to 5,516 and 12,124 is: 26,648.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,516 : 12,124 = 12,124 : x
  2. Step 2: Convert to fraction form
    5,516/12,124 = 12,124/x
  3. Step 3: Cross multiply
    5,516x = 12,124 × 12,124
  4. Step 4: Simplify right side
    5,516x = 146,991,376
  5. Step 5: Solve for x
    x = 146,991,376/5,516
  6. Step 6: Final answer
    x = 26,648.18

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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.