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Finding the Fourth Proportional to 114,078.89, 171,147.49 and 43,939.37

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Solution

The fourth proportional to 114,078.89, 171,147.49 and 43,939.37 is: 65,920.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,078.89 : 171,147.49 = 43,939.37 : x
  2. Step 2: Convert to fraction form
    114,078.89/171,147.49 = 43,939.37/x
  3. Step 3: Cross multiply
    114,078.89x = 171,147.49 × 43,939.37
  4. Step 4: Simplify right side
    114,078.89x = 7,520,112,887.68
  5. Step 5: Solve for x
    x = 7,520,112,887.68/114,078.89
  6. Step 6: Final answer
    x = 65,920.28

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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.