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Finding the Third Proportional to 20,239.50 and 30,393

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Solution

The third proportional to 20,239.50 and 30,393 is: 45,640.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,239.50 : 30,393 = 30,393 : x
  2. Step 2: Convert to fraction form
    20,239.50/30,393 = 30,393/x
  3. Step 3: Cross multiply
    20,239.50x = 30,393 × 30,393
  4. Step 4: Simplify right side
    20,239.50x = 923,734,449
  5. Step 5: Solve for x
    x = 923,734,449/20,239.50
  6. Step 6: Final answer
    x = 45,640.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.