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Finding the Fourth Proportional to 111,149.28, 166,673.46 and 47,939.52

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Solution

The fourth proportional to 111,149.28, 166,673.46 and 47,939.52 is: 71,887.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,149.28 : 166,673.46 = 47,939.52 : x
  2. Step 2: Convert to fraction form
    111,149.28/166,673.46 = 47,939.52/x
  3. Step 3: Cross multiply
    111,149.28x = 166,673.46 × 47,939.52
  4. Step 4: Simplify right side
    111,149.28x = 7,990,245,669.14
  5. Step 5: Solve for x
    x = 7,990,245,669.14/111,149.28
  6. Step 6: Final answer
    x = 71,887.52

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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.