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Finding the Third Proportional to 998.25 and 2,148.75

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Solution

The third proportional to 998.25 and 2,148.75 is: 4,625.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    998.25 : 2,148.75 = 2,148.75 : x
  2. Step 2: Convert to fraction form
    998.25/2,148.75 = 2,148.75/x
  3. Step 3: Cross multiply
    998.25x = 2,148.75 × 2,148.75
  4. Step 4: Simplify right side
    998.25x = 4,617,126.56
  5. Step 5: Solve for x
    x = 4,617,126.56/998.25
  6. Step 6: Final answer
    x = 4,625.22

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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.