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Finding the Fourth Proportional to 2,908.91, 4,016.22 and 1,791.79

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Solution

The fourth proportional to 2,908.91, 4,016.22 and 1,791.79 is: 2,473.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,908.91 : 4,016.22 = 1,791.79 : x
  2. Step 2: Convert to fraction form
    2,908.91/4,016.22 = 1,791.79/x
  3. Step 3: Cross multiply
    2,908.91x = 4,016.22 × 1,791.79
  4. Step 4: Simplify right side
    2,908.91x = 7,196,206.07
  5. Step 5: Solve for x
    x = 7,196,206.07/2,908.91
  6. Step 6: Final answer
    x = 2,473.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.