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Finding the Fourth Proportional to 363,541.70, 545,561.62 and 126,884.38

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Solution

The fourth proportional to 363,541.70, 545,561.62 and 126,884.38 is: 190,413.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,541.70 : 545,561.62 = 126,884.38 : x
  2. Step 2: Convert to fraction form
    363,541.70/545,561.62 = 126,884.38/x
  3. Step 3: Cross multiply
    363,541.70x = 545,561.62 × 126,884.38
  4. Step 4: Simplify right side
    363,541.70x = 69,223,245,177.69
  5. Step 5: Solve for x
    x = 69,223,245,177.69/363,541.70
  6. Step 6: Final answer
    x = 190,413.50

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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.