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Finding the Third Proportional to 217,673 and 336,360

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Solution

The third proportional to 217,673 and 336,360 is: 519,761.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,673 : 336,360 = 336,360 : x
  2. Step 2: Convert to fraction form
    217,673/336,360 = 336,360/x
  3. Step 3: Cross multiply
    217,673x = 336,360 × 336,360
  4. Step 4: Simplify right side
    217,673x = 113,138,049,600
  5. Step 5: Solve for x
    x = 113,138,049,600/217,673
  6. Step 6: Final answer
    x = 519,761.52

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.