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Finding the Third Proportional to 3,479 and 6,436

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Solution

The third proportional to 3,479 and 6,436 is: 11,906.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,479 : 6,436 = 6,436 : x
  2. Step 2: Convert to fraction form
    3,479/6,436 = 6,436/x
  3. Step 3: Cross multiply
    3,479x = 6,436 × 6,436
  4. Step 4: Simplify right side
    3,479x = 41,422,096
  5. Step 5: Solve for x
    x = 41,422,096/3,479
  6. Step 6: Final answer
    x = 11,906.32

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Why These Related Problems?

These problems maintain the same ratio (1.85) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.