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Finding the Fourth Proportional to 14.76, 22.10 and 14.09

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Solution

The fourth proportional to 14.76, 22.10 and 14.09 is: 21.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    14.76 : 22.10 = 14.09 : x
  2. Step 2: Convert to fraction form
    14.76/22.10 = 14.09/x
  3. Step 3: Cross multiply
    14.76x = 22.10 × 14.09
  4. Step 4: Simplify right side
    14.76x = 311.21
  5. Step 5: Solve for x
    x = 311.21/14.76
  6. Step 6: Final answer
    x = 21.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.