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Finding the Third Proportional to 714.50 and 862.50

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Solution

The third proportional to 714.50 and 862.50 is: 1,041.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    714.50 : 862.50 = 862.50 : x
  2. Step 2: Convert to fraction form
    714.50/862.50 = 862.50/x
  3. Step 3: Cross multiply
    714.50x = 862.50 × 862.50
  4. Step 4: Simplify right side
    714.50x = 743,906.25
  5. Step 5: Solve for x
    x = 743,906.25/714.50
  6. Step 6: Final answer
    x = 1,041.16

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Why These Related Problems?

These problems maintain the same ratio (1.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.