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Finding the Third Proportional to 81,782 and 176,453

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Solution

The third proportional to 81,782 and 176,453 is: 380,715.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,782 : 176,453 = 176,453 : x
  2. Step 2: Convert to fraction form
    81,782/176,453 = 176,453/x
  3. Step 3: Cross multiply
    81,782x = 176,453 × 176,453
  4. Step 4: Simplify right side
    81,782x = 31,135,661,209
  5. Step 5: Solve for x
    x = 31,135,661,209/81,782
  6. Step 6: Final answer
    x = 380,715.33

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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.