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Finding the Fourth Proportional to 94.68, 130.44 and 67

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Solution

The fourth proportional to 94.68, 130.44 and 67 is: 92.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.68 : 130.44 = 67 : x
  2. Step 2: Convert to fraction form
    94.68/130.44 = 67/x
  3. Step 3: Cross multiply
    94.68x = 130.44 × 67
  4. Step 4: Simplify right side
    94.68x = 8,739.48
  5. Step 5: Solve for x
    x = 8,739.48/94.68
  6. Step 6: Final answer
    x = 92.31

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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.