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Finding the Third Proportional to 714.75 and 1,329

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Solution

The third proportional to 714.75 and 1,329 is: 2,471.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    714.75 : 1,329 = 1,329 : x
  2. Step 2: Convert to fraction form
    714.75/1,329 = 1,329/x
  3. Step 3: Cross multiply
    714.75x = 1,329 × 1,329
  4. Step 4: Simplify right side
    714.75x = 1,766,241
  5. Step 5: Solve for x
    x = 1,766,241/714.75
  6. Step 6: Final answer
    x = 2,471.13

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Why These Related Problems?

These problems maintain the same ratio (1.86) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.