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Finding the Fourth Proportional to 111,879.87, 167,820.26 and 45,321.27

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Solution

The fourth proportional to 111,879.87, 167,820.26 and 45,321.27 is: 67,982.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,879.87 : 167,820.26 = 45,321.27 : x
  2. Step 2: Convert to fraction form
    111,879.87/167,820.26 = 45,321.27/x
  3. Step 3: Cross multiply
    111,879.87x = 167,820.26 × 45,321.27
  4. Step 4: Simplify right side
    111,879.87x = 7,605,827,088.32
  5. Step 5: Solve for x
    x = 7,605,827,088.32/111,879.87
  6. Step 6: Final answer
    x = 67,982.09

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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.