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Finding the Fourth Proportional to 1,137.24, 1,704.70 and 674.93

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Solution

The fourth proportional to 1,137.24, 1,704.70 and 674.93 is: 1,011.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,137.24 : 1,704.70 = 674.93 : x
  2. Step 2: Convert to fraction form
    1,137.24/1,704.70 = 674.93/x
  3. Step 3: Cross multiply
    1,137.24x = 1,704.70 × 674.93
  4. Step 4: Simplify right side
    1,137.24x = 1,150,553.17
  5. Step 5: Solve for x
    x = 1,150,553.17/1,137.24
  6. Step 6: Final answer
    x = 1,011.71

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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.