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Finding the Fourth Proportional to 122.93, 184.41 and 45.92

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Solution

The fourth proportional to 122.93, 184.41 and 45.92 is: 68.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    122.93 : 184.41 = 45.92 : x
  2. Step 2: Convert to fraction form
    122.93/184.41 = 45.92/x
  3. Step 3: Cross multiply
    122.93x = 184.41 × 45.92
  4. Step 4: Simplify right side
    122.93x = 8,467.53
  5. Step 5: Solve for x
    x = 8,467.53/122.93
  6. Step 6: Final answer
    x = 68.88

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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.