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Finding the Fourth Proportional to 254.74, 351.72 and 167.59

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Solution

The fourth proportional to 254.74, 351.72 and 167.59 is: 231.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.74 : 351.72 = 167.59 : x
  2. Step 2: Convert to fraction form
    254.74/351.72 = 167.59/x
  3. Step 3: Cross multiply
    254.74x = 351.72 × 167.59
  4. Step 4: Simplify right side
    254.74x = 58,944.75
  5. Step 5: Solve for x
    x = 58,944.75/254.74
  6. Step 6: Final answer
    x = 231.39

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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.