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Finding the Third Proportional to 185.25 and 392.75

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Solution

The third proportional to 185.25 and 392.75 is: 832.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    185.25 : 392.75 = 392.75 : x
  2. Step 2: Convert to fraction form
    185.25/392.75 = 392.75/x
  3. Step 3: Cross multiply
    185.25x = 392.75 × 392.75
  4. Step 4: Simplify right side
    185.25x = 154,252.56
  5. Step 5: Solve for x
    x = 154,252.56/185.25
  6. Step 6: Final answer
    x = 832.67

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.