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Finding the Third Proportional to 636.75 and 925.88

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Solution

The third proportional to 636.75 and 925.88 is: 1,346.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.75 : 925.88 = 925.88 : x
  2. Step 2: Convert to fraction form
    636.75/925.88 = 925.88/x
  3. Step 3: Cross multiply
    636.75x = 925.88 × 925.88
  4. Step 4: Simplify right side
    636.75x = 857,244.52
  5. Step 5: Solve for x
    x = 857,244.52/636.75
  6. Step 6: Final answer
    x = 1,346.28

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.