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Finding the Third Proportional to 998 and 1,786

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Solution

The third proportional to 998 and 1,786 is: 3,196.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    998 : 1,786 = 1,786 : x
  2. Step 2: Convert to fraction form
    998/1,786 = 1,786/x
  3. Step 3: Cross multiply
    998x = 1,786 × 1,786
  4. Step 4: Simplify right side
    998x = 3,189,796
  5. Step 5: Solve for x
    x = 3,189,796/998
  6. Step 6: Final answer
    x = 3,196.19

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Why These Related Problems?

These problems maintain the same ratio (1.79) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.