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Finding the Fourth Proportional to 207,912.43, 311,907.08 and 65,793.48

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Solution

The fourth proportional to 207,912.43, 311,907.08 and 65,793.48 is: 98,702.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,912.43 : 311,907.08 = 65,793.48 : x
  2. Step 2: Convert to fraction form
    207,912.43/311,907.08 = 65,793.48/x
  3. Step 3: Cross multiply
    207,912.43x = 311,907.08 × 65,793.48
  4. Step 4: Simplify right side
    207,912.43x = 20,521,452,229.84
  5. Step 5: Solve for x
    x = 20,521,452,229.84/207,912.43
  6. Step 6: Final answer
    x = 98,702.38

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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.