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Finding the Third Proportional to 79,663.50 and 172,611

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Solution

The third proportional to 79,663.50 and 172,611 is: 374,005.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,663.50 : 172,611 = 172,611 : x
  2. Step 2: Convert to fraction form
    79,663.50/172,611 = 172,611/x
  3. Step 3: Cross multiply
    79,663.50x = 172,611 × 172,611
  4. Step 4: Simplify right side
    79,663.50x = 29,794,557,321
  5. Step 5: Solve for x
    x = 29,794,557,321/79,663.50
  6. Step 6: Final answer
    x = 374,005.13

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.