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Finding the Fourth Proportional to 2,270.36, 3,404.82 and 731

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Solution

The fourth proportional to 2,270.36, 3,404.82 and 731 is: 1,096.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,270.36 : 3,404.82 = 731 : x
  2. Step 2: Convert to fraction form
    2,270.36/3,404.82 = 731/x
  3. Step 3: Cross multiply
    2,270.36x = 3,404.82 × 731
  4. Step 4: Simplify right side
    2,270.36x = 2,488,923.42
  5. Step 5: Solve for x
    x = 2,488,923.42/2,270.36
  6. Step 6: Final answer
    x = 1,096.27

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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.