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Finding the Fourth Proportional to 2,917.44, 4,026.11 and 1,591.22

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Solution

The fourth proportional to 2,917.44, 4,026.11 and 1,591.22 is: 2,195.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,917.44 : 4,026.11 = 1,591.22 : x
  2. Step 2: Convert to fraction form
    2,917.44/4,026.11 = 1,591.22/x
  3. Step 3: Cross multiply
    2,917.44x = 4,026.11 × 1,591.22
  4. Step 4: Simplify right side
    2,917.44x = 6,406,426.75
  5. Step 5: Solve for x
    x = 6,406,426.75/2,917.44
  6. Step 6: Final answer
    x = 2,195.91

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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.