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Finding the Third Proportional to 982 and 1,057

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Solution

The third proportional to 982 and 1,057 is: 1,137.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    982 : 1,057 = 1,057 : x
  2. Step 2: Convert to fraction form
    982/1,057 = 1,057/x
  3. Step 3: Cross multiply
    982x = 1,057 × 1,057
  4. Step 4: Simplify right side
    982x = 1,117,249
  5. Step 5: Solve for x
    x = 1,117,249/982
  6. Step 6: Final answer
    x = 1,137.73

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Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.