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Finding the Third Proportional to 79,157.75 and 168,031

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Solution

The third proportional to 79,157.75 and 168,031 is: 356,685.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,157.75 : 168,031 = 168,031 : x
  2. Step 2: Convert to fraction form
    79,157.75/168,031 = 168,031/x
  3. Step 3: Cross multiply
    79,157.75x = 168,031 × 168,031
  4. Step 4: Simplify right side
    79,157.75x = 28,234,416,961
  5. Step 5: Solve for x
    x = 28,234,416,961/79,157.75
  6. Step 6: Final answer
    x = 356,685.44

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.