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Finding the Fourth Proportional to 194, 267.74 and 135.92

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Solution

The fourth proportional to 194, 267.74 and 135.92 is: 187.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    194 : 267.74 = 135.92 : x
  2. Step 2: Convert to fraction form
    194/267.74 = 135.92/x
  3. Step 3: Cross multiply
    194x = 267.74 × 135.92
  4. Step 4: Simplify right side
    194x = 36,390.54
  5. Step 5: Solve for x
    x = 36,390.54/194
  6. Step 6: Final answer
    x = 187.58

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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.