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Finding the Fourth Proportional to 9.76, 14.66 and 6.93

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Solution

The fourth proportional to 9.76, 14.66 and 6.93 is: 10.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9.76 : 14.66 = 6.93 : x
  2. Step 2: Convert to fraction form
    9.76/14.66 = 6.93/x
  3. Step 3: Cross multiply
    9.76x = 14.66 × 6.93
  4. Step 4: Simplify right side
    9.76x = 101.52
  5. Step 5: Solve for x
    x = 101.52/9.76
  6. Step 6: Final answer
    x = 10.40

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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.