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Finding the Fourth Proportional to 202,441.20, 303,661.80 and 91,633.20

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Solution

The fourth proportional to 202,441.20, 303,661.80 and 91,633.20 is: 137,449.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,441.20 : 303,661.80 = 91,633.20 : x
  2. Step 2: Convert to fraction form
    202,441.20/303,661.80 = 91,633.20/x
  3. Step 3: Cross multiply
    202,441.20x = 303,661.80 × 91,633.20
  4. Step 4: Simplify right side
    202,441.20x = 27,825,502,451.76
  5. Step 5: Solve for x
    x = 27,825,502,451.76/202,441.20
  6. Step 6: Final answer
    x = 137,449.80

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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.