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Finding the Fourth Proportional to 1,469.10, 2,203.26 and 495

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Solution

The fourth proportional to 1,469.10, 2,203.26 and 495 is: 742.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,469.10 : 2,203.26 = 495 : x
  2. Step 2: Convert to fraction form
    1,469.10/2,203.26 = 495/x
  3. Step 3: Cross multiply
    1,469.10x = 2,203.26 × 495
  4. Step 4: Simplify right side
    1,469.10x = 1,090,613.70
  5. Step 5: Solve for x
    x = 1,090,613.70/1,469.10
  6. Step 6: Final answer
    x = 742.37

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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.