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Finding the Third Proportional to 2,217 and 4,116

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Solution

The third proportional to 2,217 and 4,116 is: 7,641.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217 : 4,116 = 4,116 : x
  2. Step 2: Convert to fraction form
    2,217/4,116 = 4,116/x
  3. Step 3: Cross multiply
    2,217x = 4,116 × 4,116
  4. Step 4: Simplify right side
    2,217x = 16,941,456
  5. Step 5: Solve for x
    x = 16,941,456/2,217
  6. Step 6: Final answer
    x = 7,641.61

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Why These Related Problems?

These problems maintain the same ratio (1.86) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.