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Finding the Fourth Proportional to 146, 201.56 and 111.44

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Solution

The fourth proportional to 146, 201.56 and 111.44 is: 153.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    146 : 201.56 = 111.44 : x
  2. Step 2: Convert to fraction form
    146/201.56 = 111.44/x
  3. Step 3: Cross multiply
    146x = 201.56 × 111.44
  4. Step 4: Simplify right side
    146x = 22,461.85
  5. Step 5: Solve for x
    x = 22,461.85/146
  6. Step 6: Final answer
    x = 153.85

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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.