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Finding the Fourth Proportional to 8.34, 11.48 and 6.96

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Solution

The fourth proportional to 8.34, 11.48 and 6.96 is: 9.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8.34 : 11.48 = 6.96 : x
  2. Step 2: Convert to fraction form
    8.34/11.48 = 6.96/x
  3. Step 3: Cross multiply
    8.34x = 11.48 × 6.96
  4. Step 4: Simplify right side
    8.34x = 79.90
  5. Step 5: Solve for x
    x = 79.90/8.34
  6. Step 6: Final answer
    x = 9.58

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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.