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Finding the Third Proportional to 332.25 and 628.50

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Solution

The third proportional to 332.25 and 628.50 is: 1,188.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    332.25 : 628.50 = 628.50 : x
  2. Step 2: Convert to fraction form
    332.25/628.50 = 628.50/x
  3. Step 3: Cross multiply
    332.25x = 628.50 × 628.50
  4. Step 4: Simplify right side
    332.25x = 395,012.25
  5. Step 5: Solve for x
    x = 395,012.25/332.25
  6. Step 6: Final answer
    x = 1,188.90

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Why These Related Problems?

These problems maintain the same ratio (1.89) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.