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Finding the Fourth Proportional to 1,174.46, 1,761.68 and 655.24

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Solution

The fourth proportional to 1,174.46, 1,761.68 and 655.24 is: 982.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,174.46 : 1,761.68 = 655.24 : x
  2. Step 2: Convert to fraction form
    1,174.46/1,761.68 = 655.24/x
  3. Step 3: Cross multiply
    1,174.46x = 1,761.68 × 655.24
  4. Step 4: Simplify right side
    1,174.46x = 1,154,323.20
  5. Step 5: Solve for x
    x = 1,154,323.20/1,174.46
  6. Step 6: Final answer
    x = 982.85

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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.