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Finding the Fourth Proportional to 255.44, 352.24 and 168

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Solution

The fourth proportional to 255.44, 352.24 and 168 is: 231.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.44 : 352.24 = 168 : x
  2. Step 2: Convert to fraction form
    255.44/352.24 = 168/x
  3. Step 3: Cross multiply
    255.44x = 352.24 × 168
  4. Step 4: Simplify right side
    255.44x = 59,176.32
  5. Step 5: Solve for x
    x = 59,176.32/255.44
  6. Step 6: Final answer
    x = 231.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.