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Finding the Third Proportional to 674.25 and 910.88

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Solution

The third proportional to 674.25 and 910.88 is: 1,230.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.25 : 910.88 = 910.88 : x
  2. Step 2: Convert to fraction form
    674.25/910.88 = 910.88/x
  3. Step 3: Cross multiply
    674.25x = 910.88 × 910.88
  4. Step 4: Simplify right side
    674.25x = 829,693.27
  5. Step 5: Solve for x
    x = 829,693.27/674.25
  6. Step 6: Final answer
    x = 1,230.54

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.