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Finding the Third Proportional to 5,416 and 8,124

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Solution

The third proportional to 5,416 and 8,124 is: 12,186

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,416 : 8,124 = 8,124 : x
  2. Step 2: Convert to fraction form
    5,416/8,124 = 8,124/x
  3. Step 3: Cross multiply
    5,416x = 8,124 × 8,124
  4. Step 4: Simplify right side
    5,416x = 65,999,376
  5. Step 5: Solve for x
    x = 65,999,376/5,416
  6. Step 6: Final answer
    x = 12,186

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.