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Finding the Fourth Proportional to 16.64, 22.93 and 14.70

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Solution

The fourth proportional to 16.64, 22.93 and 14.70 is: 20.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.64 : 22.93 = 14.70 : x
  2. Step 2: Convert to fraction form
    16.64/22.93 = 14.70/x
  3. Step 3: Cross multiply
    16.64x = 22.93 × 14.70
  4. Step 4: Simplify right side
    16.64x = 337.07
  5. Step 5: Solve for x
    x = 337.07/16.64
  6. Step 6: Final answer
    x = 20.26

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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.