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Finding the Third Proportional to 186.50 and 470.75

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Solution

The third proportional to 186.50 and 470.75 is: 1,188.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    186.50 : 470.75 = 470.75 : x
  2. Step 2: Convert to fraction form
    186.50/470.75 = 470.75/x
  3. Step 3: Cross multiply
    186.50x = 470.75 × 470.75
  4. Step 4: Simplify right side
    186.50x = 221,605.56
  5. Step 5: Solve for x
    x = 221,605.56/186.50
  6. Step 6: Final answer
    x = 1,188.23

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Why These Related Problems?

These problems maintain the same ratio (2.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.