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Finding the Third Proportional to 186,469 and 402,422

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Solution

The third proportional to 186,469 and 402,422 is: 868,473.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,469 : 402,422 = 402,422 : x
  2. Step 2: Convert to fraction form
    186,469/402,422 = 402,422/x
  3. Step 3: Cross multiply
    186,469x = 402,422 × 402,422
  4. Step 4: Simplify right side
    186,469x = 161,943,466,084
  5. Step 5: Solve for x
    x = 161,943,466,084/186,469
  6. Step 6: Final answer
    x = 868,473.93

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.