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Finding the Fourth Proportional to 22.45, 33.68 and 14.64

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Solution

The fourth proportional to 22.45, 33.68 and 14.64 is: 21.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    22.45 : 33.68 = 14.64 : x
  2. Step 2: Convert to fraction form
    22.45/33.68 = 14.64/x
  3. Step 3: Cross multiply
    22.45x = 33.68 × 14.64
  4. Step 4: Simplify right side
    22.45x = 492.91
  5. Step 5: Solve for x
    x = 492.91/22.45
  6. Step 6: Final answer
    x = 21.96

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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.