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Finding the Third Proportional to 206,917 and 330,600

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Solution

The third proportional to 206,917 and 330,600 is: 528,213.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,917 : 330,600 = 330,600 : x
  2. Step 2: Convert to fraction form
    206,917/330,600 = 330,600/x
  3. Step 3: Cross multiply
    206,917x = 330,600 × 330,600
  4. Step 4: Simplify right side
    206,917x = 109,296,360,000
  5. Step 5: Solve for x
    x = 109,296,360,000/206,917
  6. Step 6: Final answer
    x = 528,213.53

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.