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Finding the Fourth Proportional to 1,474.32, 2,035.38 and 885

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Solution

The fourth proportional to 1,474.32, 2,035.38 and 885 is: 1,221.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,474.32 : 2,035.38 = 885 : x
  2. Step 2: Convert to fraction form
    1,474.32/2,035.38 = 885/x
  3. Step 3: Cross multiply
    1,474.32x = 2,035.38 × 885
  4. Step 4: Simplify right side
    1,474.32x = 1,801,311.30
  5. Step 5: Solve for x
    x = 1,801,311.30/1,474.32
  6. Step 6: Final answer
    x = 1,221.79

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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.