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Finding the Third Proportional to 221.25 and 464.75

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Solution

The third proportional to 221.25 and 464.75 is: 976.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    221.25 : 464.75 = 464.75 : x
  2. Step 2: Convert to fraction form
    221.25/464.75 = 464.75/x
  3. Step 3: Cross multiply
    221.25x = 464.75 × 464.75
  4. Step 4: Simplify right side
    221.25x = 215,992.56
  5. Step 5: Solve for x
    x = 215,992.56/221.25
  6. Step 6: Final answer
    x = 976.24

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.