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Finding the Fourth Proportional to 15.48, 23.22 and 4.65

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Solution

The fourth proportional to 15.48, 23.22 and 4.65 is: 6.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15.48 : 23.22 = 4.65 : x
  2. Step 2: Convert to fraction form
    15.48/23.22 = 4.65/x
  3. Step 3: Cross multiply
    15.48x = 23.22 × 4.65
  4. Step 4: Simplify right side
    15.48x = 107.94
  5. Step 5: Solve for x
    x = 107.94/15.48
  6. Step 6: Final answer
    x = 6.97

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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.