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Finding the Fourth Proportional to 14.95, 22.43 and 4.81

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Solution

The fourth proportional to 14.95, 22.43 and 4.81 is: 7.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14.95 : 22.43 = 4.81 : x
  2. Step 2: Convert to fraction form
    14.95/22.43 = 4.81/x
  3. Step 3: Cross multiply
    14.95x = 22.43 × 4.81
  4. Step 4: Simplify right side
    14.95x = 107.84
  5. Step 5: Solve for x
    x = 107.84/14.95
  6. Step 6: Final answer
    x = 7.21

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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.