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Finding the Fourth Proportional to 190.24, 262.48 and 111.52

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Solution

The fourth proportional to 190.24, 262.48 and 111.52 is: 153.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.24 : 262.48 = 111.52 : x
  2. Step 2: Convert to fraction form
    190.24/262.48 = 111.52/x
  3. Step 3: Cross multiply
    190.24x = 262.48 × 111.52
  4. Step 4: Simplify right side
    190.24x = 29,271.77
  5. Step 5: Solve for x
    x = 29,271.77/190.24
  6. Step 6: Final answer
    x = 153.87

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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.