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Finding the Third Proportional to 998 and 1,513

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Solution

The third proportional to 998 and 1,513 is: 2,293.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    998 : 1,513 = 1,513 : x
  2. Step 2: Convert to fraction form
    998/1,513 = 1,513/x
  3. Step 3: Cross multiply
    998x = 1,513 × 1,513
  4. Step 4: Simplify right side
    998x = 2,289,169
  5. Step 5: Solve for x
    x = 2,289,169/998
  6. Step 6: Final answer
    x = 2,293.76

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.