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Finding the Third Proportional to 324.75 and 610.50

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Solution

The third proportional to 324.75 and 610.50 is: 1,147.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.75 : 610.50 = 610.50 : x
  2. Step 2: Convert to fraction form
    324.75/610.50 = 610.50/x
  3. Step 3: Cross multiply
    324.75x = 610.50 × 610.50
  4. Step 4: Simplify right side
    324.75x = 372,710.25
  5. Step 5: Solve for x
    x = 372,710.25/324.75
  6. Step 6: Final answer
    x = 1,147.68

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Why These Related Problems?

These problems maintain the same ratio (1.88) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.