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Finding the Fourth Proportional to 74,449.54, 102,942.39 and 73,247.68

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Solution

The fourth proportional to 74,449.54, 102,942.39 and 73,247.68 is: 101,280.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,449.54 : 102,942.39 = 73,247.68 : x
  2. Step 2: Convert to fraction form
    74,449.54/102,942.39 = 73,247.68/x
  3. Step 3: Cross multiply
    74,449.54x = 102,942.39 × 73,247.68
  4. Step 4: Simplify right side
    74,449.54x = 7,540,291,241.16
  5. Step 5: Solve for x
    x = 7,540,291,241.16/74,449.54
  6. Step 6: Final answer
    x = 101,280.56

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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.