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Finding the Fourth Proportional to 225,840.20, 338,792.49 and 74,004.80

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Solution

The fourth proportional to 225,840.20, 338,792.49 and 74,004.80 is: 111,017.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,840.20 : 338,792.49 = 74,004.80 : x
  2. Step 2: Convert to fraction form
    225,840.20/338,792.49 = 74,004.80/x
  3. Step 3: Cross multiply
    225,840.20x = 338,792.49 × 74,004.80
  4. Step 4: Simplify right side
    225,840.20x = 25,072,268,769.99
  5. Step 5: Solve for x
    x = 25,072,268,769.99/225,840.20
  6. Step 6: Final answer
    x = 111,017.74

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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.