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Finding the Fourth Proportional to 363,591.99, 545,391.63 and 126,940.77

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Solution

The fourth proportional to 363,591.99, 545,391.63 and 126,940.77 is: 190,412.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,591.99 : 545,391.63 = 126,940.77 : x
  2. Step 2: Convert to fraction form
    363,591.99/545,391.63 = 126,940.77/x
  3. Step 3: Cross multiply
    363,591.99x = 545,391.63 × 126,940.77
  4. Step 4: Simplify right side
    363,591.99x = 69,232,433,463.76
  5. Step 5: Solve for x
    x = 69,232,433,463.76/363,591.99
  6. Step 6: Final answer
    x = 190,412.43

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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.