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Finding the Third Proportional to 19,393.50 and 39,603

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Solution

The third proportional to 19,393.50 and 39,603 is: 80,872.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,393.50 : 39,603 = 39,603 : x
  2. Step 2: Convert to fraction form
    19,393.50/39,603 = 39,603/x
  3. Step 3: Cross multiply
    19,393.50x = 39,603 × 39,603
  4. Step 4: Simplify right side
    19,393.50x = 1,568,397,609
  5. Step 5: Solve for x
    x = 1,568,397,609/19,393.50
  6. Step 6: Final answer
    x = 80,872.33

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.