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Finding the Third Proportional to 3,219 and 6,917

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Solution

The third proportional to 3,219 and 6,917 is: 14,863.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,219 : 6,917 = 6,917 : x
  2. Step 2: Convert to fraction form
    3,219/6,917 = 6,917/x
  3. Step 3: Cross multiply
    3,219x = 6,917 × 6,917
  4. Step 4: Simplify right side
    3,219x = 47,844,889
  5. Step 5: Solve for x
    x = 47,844,889/3,219
  6. Step 6: Final answer
    x = 14,863.28

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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.