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Finding the Fourth Proportional to 143,940.56, 215,917.32 and 44,093.48

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Solution

The fourth proportional to 143,940.56, 215,917.32 and 44,093.48 is: 66,142.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,940.56 : 215,917.32 = 44,093.48 : x
  2. Step 2: Convert to fraction form
    143,940.56/215,917.32 = 44,093.48/x
  3. Step 3: Cross multiply
    143,940.56x = 215,917.32 × 44,093.48
  4. Step 4: Simplify right side
    143,940.56x = 9,520,546,031.07
  5. Step 5: Solve for x
    x = 9,520,546,031.07/143,940.56
  6. Step 6: Final answer
    x = 66,142.21

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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.