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Finding the Fourth Proportional to 11,859.56, 17,791.51 and 3,961.32

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Solution

The fourth proportional to 11,859.56, 17,791.51 and 3,961.32 is: 5,942.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,859.56 : 17,791.51 = 3,961.32 : x
  2. Step 2: Convert to fraction form
    11,859.56/17,791.51 = 3,961.32/x
  3. Step 3: Cross multiply
    11,859.56x = 17,791.51 × 3,961.32
  4. Step 4: Simplify right side
    11,859.56x = 70,477,864.39
  5. Step 5: Solve for x
    x = 70,477,864.39/11,859.56
  6. Step 6: Final answer
    x = 5,942.71

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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.