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Finding the Fourth Proportional to 362,910.81, 544,455.51 and 126,255.54

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Solution

The fourth proportional to 362,910.81, 544,455.51 and 126,255.54 is: 189,414.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,910.81 : 544,455.51 = 126,255.54 : x
  2. Step 2: Convert to fraction form
    362,910.81/544,455.51 = 126,255.54/x
  3. Step 3: Cross multiply
    362,910.81x = 544,455.51 × 126,255.54
  4. Step 4: Simplify right side
    362,910.81x = 68,740,524,421.03
  5. Step 5: Solve for x
    x = 68,740,524,421.03/362,910.81
  6. Step 6: Final answer
    x = 189,414.38

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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.