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Finding the Third Proportional to 7,923 and 11,149.50

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Solution

The third proportional to 7,923 and 11,149.50 is: 15,689.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,923 : 11,149.50 = 11,149.50 : x
  2. Step 2: Convert to fraction form
    7,923/11,149.50 = 11,149.50/x
  3. Step 3: Cross multiply
    7,923x = 11,149.50 × 11,149.50
  4. Step 4: Simplify right side
    7,923x = 124,311,350.25
  5. Step 5: Solve for x
    x = 124,311,350.25/7,923
  6. Step 6: Final answer
    x = 15,689.93

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.