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Finding the Third Proportional to 268.75 and 363

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Solution

The third proportional to 268.75 and 363 is: 490.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.75 : 363 = 363 : x
  2. Step 2: Convert to fraction form
    268.75/363 = 363/x
  3. Step 3: Cross multiply
    268.75x = 363 × 363
  4. Step 4: Simplify right side
    268.75x = 131,769
  5. Step 5: Solve for x
    x = 131,769/268.75
  6. Step 6: Final answer
    x = 490.30

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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.