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Finding the Fourth Proportional to 363,542.87, 545,068.26 and 126,756.38

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Solution

The fourth proportional to 363,542.87, 545,068.26 and 126,756.38 is: 190,048.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,542.87 : 545,068.26 = 126,756.38 : x
  2. Step 2: Convert to fraction form
    363,542.87/545,068.26 = 126,756.38/x
  3. Step 3: Cross multiply
    363,542.87x = 545,068.26 × 126,756.38
  4. Step 4: Simplify right side
    363,542.87x = 69,090,876,765.16
  5. Step 5: Solve for x
    x = 69,090,876,765.16/363,542.87
  6. Step 6: Final answer
    x = 190,048.78

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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.