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Finding the Fourth Proportional to 1,474.71, 2,033.91 and 885.13

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Solution

The fourth proportional to 1,474.71, 2,033.91 and 885.13 is: 1,220.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,474.71 : 2,033.91 = 885.13 : x
  2. Step 2: Convert to fraction form
    1,474.71/2,033.91 = 885.13/x
  3. Step 3: Cross multiply
    1,474.71x = 2,033.91 × 885.13
  4. Step 4: Simplify right side
    1,474.71x = 1,800,269.67
  5. Step 5: Solve for x
    x = 1,800,269.67/1,474.71
  6. Step 6: Final answer
    x = 1,220.76

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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.