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Finding the Fourth Proportional to 73.63, 111.04 and 67.69

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Solution

The fourth proportional to 73.63, 111.04 and 67.69 is: 102.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.63 : 111.04 = 67.69 : x
  2. Step 2: Convert to fraction form
    73.63/111.04 = 67.69/x
  3. Step 3: Cross multiply
    73.63x = 111.04 × 67.69
  4. Step 4: Simplify right side
    73.63x = 7,516.30
  5. Step 5: Solve for x
    x = 7,516.30/73.63
  6. Step 6: Final answer
    x = 102.08

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These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.