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Finding the Third Proportional to 20,839.78 and 32,319

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Solution

The third proportional to 20,839.78 and 32,319 is: 50,121.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,839.78 : 32,319 = 32,319 : x
  2. Step 2: Convert to fraction form
    20,839.78/32,319 = 32,319/x
  3. Step 3: Cross multiply
    20,839.78x = 32,319 × 32,319
  4. Step 4: Simplify right side
    20,839.78x = 1,044,517,761
  5. Step 5: Solve for x
    x = 1,044,517,761/20,839.78
  6. Step 6: Final answer
    x = 50,121.34

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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.