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Finding the Third Proportional to 2,543.91 and 3,910.78

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Solution

The third proportional to 2,543.91 and 3,910.78 is: 6,012.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,543.91 : 3,910.78 = 3,910.78 : x
  2. Step 2: Convert to fraction form
    2,543.91/3,910.78 = 3,910.78/x
  3. Step 3: Cross multiply
    2,543.91x = 3,910.78 × 3,910.78
  4. Step 4: Simplify right side
    2,543.91x = 15,294,209.99
  5. Step 5: Solve for x
    x = 15,294,209.99/2,543.91
  6. Step 6: Final answer
    x = 6,012.10

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.