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Finding the Fourth Proportional to 1,367.89, 2,049.25 and 1,090.77

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Solution

The fourth proportional to 1,367.89, 2,049.25 and 1,090.77 is: 1,634.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,367.89 : 2,049.25 = 1,090.77 : x
  2. Step 2: Convert to fraction form
    1,367.89/2,049.25 = 1,090.77/x
  3. Step 3: Cross multiply
    1,367.89x = 2,049.25 × 1,090.77
  4. Step 4: Simplify right side
    1,367.89x = 2,235,252.06
  5. Step 5: Solve for x
    x = 2,235,252.06/1,367.89
  6. Step 6: Final answer
    x = 1,634.09

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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.