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Finding the Fourth Proportional to 16.57, 22.86 and 10.74

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Solution

The fourth proportional to 16.57, 22.86 and 10.74 is: 14.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.57 : 22.86 = 10.74 : x
  2. Step 2: Convert to fraction form
    16.57/22.86 = 10.74/x
  3. Step 3: Cross multiply
    16.57x = 22.86 × 10.74
  4. Step 4: Simplify right side
    16.57x = 245.52
  5. Step 5: Solve for x
    x = 245.52/16.57
  6. Step 6: Final answer
    x = 14.82

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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.