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Finding the Fourth Proportional to 363,305.48, 544,961.26 and 126,647.78

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Solution

The fourth proportional to 363,305.48, 544,961.26 and 126,647.78 is: 189,972.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,305.48 : 544,961.26 = 126,647.78 : x
  2. Step 2: Convert to fraction form
    363,305.48/544,961.26 = 126,647.78/x
  3. Step 3: Cross multiply
    363,305.48x = 544,961.26 × 126,647.78
  4. Step 4: Simplify right side
    363,305.48x = 69,018,133,765.00
  5. Step 5: Solve for x
    x = 69,018,133,765.00/363,305.48
  6. Step 6: Final answer
    x = 189,972.73

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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.