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Finding the Fourth Proportional to 181.76, 272.54 and 60

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Solution

The fourth proportional to 181.76, 272.54 and 60 is: 89.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    181.76 : 272.54 = 60 : x
  2. Step 2: Convert to fraction form
    181.76/272.54 = 60/x
  3. Step 3: Cross multiply
    181.76x = 272.54 × 60
  4. Step 4: Simplify right side
    181.76x = 16,352.40
  5. Step 5: Solve for x
    x = 16,352.40/181.76
  6. Step 6: Final answer
    x = 89.97

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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.