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Finding the Third Proportional to 171,721 and 368,834

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Solution

The third proportional to 171,721 and 368,834 is: 792,206.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,721 : 368,834 = 368,834 : x
  2. Step 2: Convert to fraction form
    171,721/368,834 = 368,834/x
  3. Step 3: Cross multiply
    171,721x = 368,834 × 368,834
  4. Step 4: Simplify right side
    171,721x = 136,038,519,556
  5. Step 5: Solve for x
    x = 136,038,519,556/171,721
  6. Step 6: Final answer
    x = 792,206.66

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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.