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Finding the Fourth Proportional to 143,924.92, 215,736.56 and 80,652.27

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Solution

The fourth proportional to 143,924.92, 215,736.56 and 80,652.27 is: 120,893.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,924.92 : 215,736.56 = 80,652.27 : x
  2. Step 2: Convert to fraction form
    143,924.92/215,736.56 = 80,652.27/x
  3. Step 3: Cross multiply
    143,924.92x = 215,736.56 × 80,652.27
  4. Step 4: Simplify right side
    143,924.92x = 17,399,643,994.19
  5. Step 5: Solve for x
    x = 17,399,643,994.19/143,924.92
  6. Step 6: Final answer
    x = 120,893.90

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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.