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Finding the Fourth Proportional to 905,793.15, 1,269,976.65 and 905,793.15

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Solution

The fourth proportional to 905,793.15, 1,269,976.65 and 905,793.15 is: 1,269,976.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,793.15 : 1,269,976.65 = 905,793.15 : x
  2. Step 2: Convert to fraction form
    905,793.15/1,269,976.65 = 905,793.15/x
  3. Step 3: Cross multiply
    905,793.15x = 1,269,976.65 × 905,793.15
  4. Step 4: Simplify right side
    905,793.15x = 1,150,336,150,229.95
  5. Step 5: Solve for x
    x = 1,150,336,150,229.95/905,793.15
  6. Step 6: Final answer
    x = 1,269,976.65

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.