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Finding the Fourth Proportional to 2,007.25, 3,011.74 and 775.52

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Solution

The fourth proportional to 2,007.25, 3,011.74 and 775.52 is: 1,163.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,007.25 : 3,011.74 = 775.52 : x
  2. Step 2: Convert to fraction form
    2,007.25/3,011.74 = 775.52/x
  3. Step 3: Cross multiply
    2,007.25x = 3,011.74 × 775.52
  4. Step 4: Simplify right side
    2,007.25x = 2,335,658.90
  5. Step 5: Solve for x
    x = 2,335,658.90/2,007.25
  6. Step 6: Final answer
    x = 1,163.61

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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.