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Finding the Third Proportional to 326.50 and 860.75

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Solution

The third proportional to 326.50 and 860.75 is: 2,269.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.50 : 860.75 = 860.75 : x
  2. Step 2: Convert to fraction form
    326.50/860.75 = 860.75/x
  3. Step 3: Cross multiply
    326.50x = 860.75 × 860.75
  4. Step 4: Simplify right side
    326.50x = 740,890.56
  5. Step 5: Solve for x
    x = 740,890.56/326.50
  6. Step 6: Final answer
    x = 2,269.19

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Why These Related Problems?

These problems maintain the same ratio (2.64) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.