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Finding the Third Proportional to 39,397.50 and 87,543

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Solution

The third proportional to 39,397.50 and 87,543 is: 194,524.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,397.50 : 87,543 = 87,543 : x
  2. Step 2: Convert to fraction form
    39,397.50/87,543 = 87,543/x
  3. Step 3: Cross multiply
    39,397.50x = 87,543 × 87,543
  4. Step 4: Simplify right side
    39,397.50x = 7,663,776,849
  5. Step 5: Solve for x
    x = 7,663,776,849/39,397.50
  6. Step 6: Final answer
    x = 194,524.45

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.