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Finding the Third Proportional to 79,866 and 171,396

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Solution

The third proportional to 79,866 and 171,396 is: 367,823.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,866 : 171,396 = 171,396 : x
  2. Step 2: Convert to fraction form
    79,866/171,396 = 171,396/x
  3. Step 3: Cross multiply
    79,866x = 171,396 × 171,396
  4. Step 4: Simplify right side
    79,866x = 29,376,588,816
  5. Step 5: Solve for x
    x = 29,376,588,816/79,866
  6. Step 6: Final answer
    x = 367,823.46

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.