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Finding the Fourth Proportional to 422,542.20, 633,854.70 and 123,025.80

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Solution

The fourth proportional to 422,542.20, 633,854.70 and 123,025.80 is: 184,550.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,542.20 : 633,854.70 = 123,025.80 : x
  2. Step 2: Convert to fraction form
    422,542.20/633,854.70 = 123,025.80/x
  3. Step 3: Cross multiply
    422,542.20x = 633,854.70 × 123,025.80
  4. Step 4: Simplify right side
    422,542.20x = 77,980,481,551.26
  5. Step 5: Solve for x
    x = 77,980,481,551.26/422,542.20
  6. Step 6: Final answer
    x = 184,550.75

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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.