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Finding the Fourth Proportional to 14.67, 22 and 9.31

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Solution

The fourth proportional to 14.67, 22 and 9.31 is: 13.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14.67 : 22 = 9.31 : x
  2. Step 2: Convert to fraction form
    14.67/22 = 9.31/x
  3. Step 3: Cross multiply
    14.67x = 22 × 9.31
  4. Step 4: Simplify right side
    14.67x = 204.82
  5. Step 5: Solve for x
    x = 204.82/14.67
  6. Step 6: Final answer
    x = 13.96

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1.5x scale

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.