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Finding the Fourth Proportional to 16.72, 22.96 and 16.08

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Solution

The fourth proportional to 16.72, 22.96 and 16.08 is: 22.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.72 : 22.96 = 16.08 : x
  2. Step 2: Convert to fraction form
    16.72/22.96 = 16.08/x
  3. Step 3: Cross multiply
    16.72x = 22.96 × 16.08
  4. Step 4: Simplify right side
    16.72x = 369.20
  5. Step 5: Solve for x
    x = 369.20/16.72
  6. Step 6: Final answer
    x = 22.08

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.