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Finding the Third Proportional to 5,275.25 and 7,909.50

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Solution

The third proportional to 5,275.25 and 7,909.50 is: 11,859.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,275.25 : 7,909.50 = 7,909.50 : x
  2. Step 2: Convert to fraction form
    5,275.25/7,909.50 = 7,909.50/x
  3. Step 3: Cross multiply
    5,275.25x = 7,909.50 × 7,909.50
  4. Step 4: Simplify right side
    5,275.25x = 62,560,190.25
  5. Step 5: Solve for x
    x = 62,560,190.25/5,275.25
  6. Step 6: Final answer
    x = 11,859.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.