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Finding the Fourth Proportional to 72,249.50, 108,383.48 and 27,888.94

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Solution

The fourth proportional to 72,249.50, 108,383.48 and 27,888.94 is: 41,836.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,249.50 : 108,383.48 = 27,888.94 : x
  2. Step 2: Convert to fraction form
    72,249.50/108,383.48 = 27,888.94/x
  3. Step 3: Cross multiply
    72,249.50x = 108,383.48 × 27,888.94
  4. Step 4: Simplify right side
    72,249.50x = 3,022,700,628.20
  5. Step 5: Solve for x
    x = 3,022,700,628.20/72,249.50
  6. Step 6: Final answer
    x = 41,836.97

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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.