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Finding the Fourth Proportional to 57,871.56, 79,879.57 and 33,678.18

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Solution

The fourth proportional to 57,871.56, 79,879.57 and 33,678.18 is: 46,485.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,871.56 : 79,879.57 = 33,678.18 : x
  2. Step 2: Convert to fraction form
    57,871.56/79,879.57 = 33,678.18/x
  3. Step 3: Cross multiply
    57,871.56x = 79,879.57 × 33,678.18
  4. Step 4: Simplify right side
    57,871.56x = 2,690,198,452.59
  5. Step 5: Solve for x
    x = 2,690,198,452.59/57,871.56
  6. Step 6: Final answer
    x = 46,485.67

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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.