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Finding the Fourth Proportional to 184.50, 276.75 and 76.32

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Solution

The fourth proportional to 184.50, 276.75 and 76.32 is: 114.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    184.50 : 276.75 = 76.32 : x
  2. Step 2: Convert to fraction form
    184.50/276.75 = 76.32/x
  3. Step 3: Cross multiply
    184.50x = 276.75 × 76.32
  4. Step 4: Simplify right side
    184.50x = 21,121.56
  5. Step 5: Solve for x
    x = 21,121.56/184.50
  6. Step 6: Final answer
    x = 114.48

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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.