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Finding the Fourth Proportional to 16.63, 22.93 and 11.16

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Solution

The fourth proportional to 16.63, 22.93 and 11.16 is: 15.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.63 : 22.93 = 11.16 : x
  2. Step 2: Convert to fraction form
    16.63/22.93 = 11.16/x
  3. Step 3: Cross multiply
    16.63x = 22.93 × 11.16
  4. Step 4: Simplify right side
    16.63x = 255.87
  5. Step 5: Solve for x
    x = 255.87/16.63
  6. Step 6: Final answer
    x = 15.39

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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.