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Finding the Third Proportional to 4,000 and 8,186

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Solution

The third proportional to 4,000 and 8,186 is: 16,752.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,000 : 8,186 = 8,186 : x
  2. Step 2: Convert to fraction form
    4,000/8,186 = 8,186/x
  3. Step 3: Cross multiply
    4,000x = 8,186 × 8,186
  4. Step 4: Simplify right side
    4,000x = 67,010,596
  5. Step 5: Solve for x
    x = 67,010,596/4,000
  6. Step 6: Final answer
    x = 16,752.65

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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.