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Finding the Third Proportional to 2,398.71 and 5,161.92

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Solution

The third proportional to 2,398.71 and 5,161.92 is: 11,108.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,398.71 : 5,161.92 = 5,161.92 : x
  2. Step 2: Convert to fraction form
    2,398.71/5,161.92 = 5,161.92/x
  3. Step 3: Cross multiply
    2,398.71x = 5,161.92 × 5,161.92
  4. Step 4: Simplify right side
    2,398.71x = 26,645,437.44
  5. Step 5: Solve for x
    x = 26,645,437.44/2,398.71
  6. Step 6: Final answer
    x = 11,108.23

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.