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Finding the Fourth Proportional to 1,906.59, 2,631.08 and 1,067.29

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Solution

The fourth proportional to 1,906.59, 2,631.08 and 1,067.29 is: 1,472.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,906.59 : 2,631.08 = 1,067.29 : x
  2. Step 2: Convert to fraction form
    1,906.59/2,631.08 = 1,067.29/x
  3. Step 3: Cross multiply
    1,906.59x = 2,631.08 × 1,067.29
  4. Step 4: Simplify right side
    1,906.59x = 2,808,113.46
  5. Step 5: Solve for x
    x = 2,808,113.46/1,906.59
  6. Step 6: Final answer
    x = 1,472.85

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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.