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Finding the Fourth Proportional to 241, 361.46 and 86.92

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Solution

The fourth proportional to 241, 361.46 and 86.92 is: 130.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    241 : 361.46 = 86.92 : x
  2. Step 2: Convert to fraction form
    241/361.46 = 86.92/x
  3. Step 3: Cross multiply
    241x = 361.46 × 86.92
  4. Step 4: Simplify right side
    241x = 31,418.10
  5. Step 5: Solve for x
    x = 31,418.10/241
  6. Step 6: Final answer
    x = 130.37

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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.