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Finding the Fourth Proportional to 202,498.80, 303,748.20 and 135,576.60

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Solution

The fourth proportional to 202,498.80, 303,748.20 and 135,576.60 is: 203,364.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,498.80 : 303,748.20 = 135,576.60 : x
  2. Step 2: Convert to fraction form
    202,498.80/303,748.20 = 135,576.60/x
  3. Step 3: Cross multiply
    202,498.80x = 303,748.20 × 135,576.60
  4. Step 4: Simplify right side
    202,498.80x = 41,181,148,212.12
  5. Step 5: Solve for x
    x = 41,181,148,212.12/202,498.80
  6. Step 6: Final answer
    x = 203,364.90

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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.