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Finding the Third Proportional to 71,321 and 110,376

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Solution

The third proportional to 71,321 and 110,376 is: 170,817.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,321 : 110,376 = 110,376 : x
  2. Step 2: Convert to fraction form
    71,321/110,376 = 110,376/x
  3. Step 3: Cross multiply
    71,321x = 110,376 × 110,376
  4. Step 4: Simplify right side
    71,321x = 12,182,861,376
  5. Step 5: Solve for x
    x = 12,182,861,376/71,321
  6. Step 6: Final answer
    x = 170,817.31

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.