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Finding the Fourth Proportional to 11,944.46, 17,906.97 and 4,920.55

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Solution

The fourth proportional to 11,944.46, 17,906.97 and 4,920.55 is: 7,376.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,944.46 : 17,906.97 = 4,920.55 : x
  2. Step 2: Convert to fraction form
    11,944.46/17,906.97 = 4,920.55/x
  3. Step 3: Cross multiply
    11,944.46x = 17,906.97 × 4,920.55
  4. Step 4: Simplify right side
    11,944.46x = 88,112,114.92
  5. Step 5: Solve for x
    x = 88,112,114.92/11,944.46
  6. Step 6: Final answer
    x = 7,376.82

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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.