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Finding the Fourth Proportional to 616,996.80, 925,057.80 and 280,198.80

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Solution

The fourth proportional to 616,996.80, 925,057.80 and 280,198.80 is: 420,099.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,996.80 : 925,057.80 = 280,198.80 : x
  2. Step 2: Convert to fraction form
    616,996.80/925,057.80 = 280,198.80/x
  3. Step 3: Cross multiply
    616,996.80x = 925,057.80 × 280,198.80
  4. Step 4: Simplify right side
    616,996.80x = 259,200,085,490.64
  5. Step 5: Solve for x
    x = 259,200,085,490.64/616,996.80
  6. Step 6: Final answer
    x = 420,099.56

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1.5x scale

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.