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Finding the Fourth Proportional to 363,112.38, 544,683.21 and 126,478.98

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Solution

The fourth proportional to 363,112.38, 544,683.21 and 126,478.98 is: 189,723.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,112.38 : 544,683.21 = 126,478.98 : x
  2. Step 2: Convert to fraction form
    363,112.38/544,683.21 = 126,478.98/x
  3. Step 3: Cross multiply
    363,112.38x = 544,683.21 × 126,478.98
  4. Step 4: Simplify right side
    363,112.38x = 68,890,976,823.93
  5. Step 5: Solve for x
    x = 68,890,976,823.93/363,112.38
  6. Step 6: Final answer
    x = 189,723.57

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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.