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Finding the Third Proportional to 714.75 and 1,560

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Solution

The third proportional to 714.75 and 1,560 is: 3,404.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    714.75 : 1,560 = 1,560 : x
  2. Step 2: Convert to fraction form
    714.75/1,560 = 1,560/x
  3. Step 3: Cross multiply
    714.75x = 1,560 × 1,560
  4. Step 4: Simplify right side
    714.75x = 2,433,600
  5. Step 5: Solve for x
    x = 2,433,600/714.75
  6. Step 6: Final answer
    x = 3,404.83

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.