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Finding the Fourth Proportional to 202,990.70, 303,879.41 and 122,785.95

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Solution

The fourth proportional to 202,990.70, 303,879.41 and 122,785.95 is: 183,811.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,990.70 : 303,879.41 = 122,785.95 : x
  2. Step 2: Convert to fraction form
    202,990.70/303,879.41 = 122,785.95/x
  3. Step 3: Cross multiply
    202,990.70x = 303,879.41 × 122,785.95
  4. Step 4: Simplify right side
    202,990.70x = 37,312,121,064.37
  5. Step 5: Solve for x
    x = 37,312,121,064.37/202,990.70
  6. Step 6: Final answer
    x = 183,811.97

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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.