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Finding the Fourth Proportional to 8,798,942.80, 13,198,414.20 and 5,019,806.80

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Solution

The fourth proportional to 8,798,942.80, 13,198,414.20 and 5,019,806.80 is: 7,529,710.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,798,942.80 : 13,198,414.20 = 5,019,806.80 : x
  2. Step 2: Convert to fraction form
    8,798,942.80/13,198,414.20 = 5,019,806.80/x
  3. Step 3: Cross multiply
    8,798,942.80x = 13,198,414.20 × 5,019,806.80
  4. Step 4: Simplify right side
    8,798,942.80x = 66,253,489,350,376.55
  5. Step 5: Solve for x
    x = 66,253,489,350,376.55/8,798,942.80
  6. Step 6: Final answer
    x = 7,529,710.20

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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.