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Finding the Fourth Proportional to 226, 338.96 and 104.22

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Solution

The fourth proportional to 226, 338.96 and 104.22 is: 156.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    226 : 338.96 = 104.22 : x
  2. Step 2: Convert to fraction form
    226/338.96 = 104.22/x
  3. Step 3: Cross multiply
    226x = 338.96 × 104.22
  4. Step 4: Simplify right side
    226x = 35,326.41
  5. Step 5: Solve for x
    x = 35,326.41/226
  6. Step 6: Final answer
    x = 156.31

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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.