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Finding the Third Proportional to 997.50 and 1,304

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Solution

The third proportional to 997.50 and 1,304 is: 1,704.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    997.50 : 1,304 = 1,304 : x
  2. Step 2: Convert to fraction form
    997.50/1,304 = 1,304/x
  3. Step 3: Cross multiply
    997.50x = 1,304 × 1,304
  4. Step 4: Simplify right side
    997.50x = 1,700,416
  5. Step 5: Solve for x
    x = 1,700,416/997.50
  6. Step 6: Final answer
    x = 1,704.68

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.