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Finding the Fourth Proportional to 73,719.78, 110,568.78 and 36,269.79

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Solution

The fourth proportional to 73,719.78, 110,568.78 and 36,269.79 is: 54,399.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,719.78 : 110,568.78 = 36,269.79 : x
  2. Step 2: Convert to fraction form
    73,719.78/110,568.78 = 36,269.79/x
  3. Step 3: Cross multiply
    73,719.78x = 110,568.78 × 36,269.79
  4. Step 4: Simplify right side
    73,719.78x = 4,010,306,431.16
  5. Step 5: Solve for x
    x = 4,010,306,431.16/73,719.78
  6. Step 6: Final answer
    x = 54,399.33

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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.