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Finding the Fourth Proportional to 202,639.74, 303,795.56 and 84,399.59

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Solution

The fourth proportional to 202,639.74, 303,795.56 and 84,399.59 is: 126,531.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,639.74 : 303,795.56 = 84,399.59 : x
  2. Step 2: Convert to fraction form
    202,639.74/303,795.56 = 84,399.59/x
  3. Step 3: Cross multiply
    202,639.74x = 303,795.56 × 84,399.59
  4. Step 4: Simplify right side
    202,639.74x = 25,640,218,766.84
  5. Step 5: Solve for x
    x = 25,640,218,766.84/202,639.74
  6. Step 6: Final answer
    x = 126,531.05

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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.