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Finding the Third Proportional to 7,716.94 and 11,974.50

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Solution

The third proportional to 7,716.94 and 11,974.50 is: 18,581.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,716.94 : 11,974.50 = 11,974.50 : x
  2. Step 2: Convert to fraction form
    7,716.94/11,974.50 = 11,974.50/x
  3. Step 3: Cross multiply
    7,716.94x = 11,974.50 × 11,974.50
  4. Step 4: Simplify right side
    7,716.94x = 143,388,650.25
  5. Step 5: Solve for x
    x = 143,388,650.25/7,716.94
  6. Step 6: Final answer
    x = 18,581.03

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.