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Finding the Third Proportional to 636.50 and 1,252

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Solution

The third proportional to 636.50 and 1,252 is: 2,462.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.50 : 1,252 = 1,252 : x
  2. Step 2: Convert to fraction form
    636.50/1,252 = 1,252/x
  3. Step 3: Cross multiply
    636.50x = 1,252 × 1,252
  4. Step 4: Simplify right side
    636.50x = 1,567,504
  5. Step 5: Solve for x
    x = 1,567,504/636.50
  6. Step 6: Final answer
    x = 2,462.69

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Why These Related Problems?

These problems maintain the same ratio (1.97) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.