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Finding the Fourth Proportional to 22.16, 32.99 and 22.03

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Solution

The fourth proportional to 22.16, 32.99 and 22.03 is: 32.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    22.16 : 32.99 = 22.03 : x
  2. Step 2: Convert to fraction form
    22.16/32.99 = 22.03/x
  3. Step 3: Cross multiply
    22.16x = 32.99 × 22.03
  4. Step 4: Simplify right side
    22.16x = 726.58
  5. Step 5: Solve for x
    x = 726.58/22.16
  6. Step 6: Final answer
    x = 32.78

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.