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Finding the Fourth Proportional to 7,340,553.20, 10,989,834.60 and 7,340,553.20

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Solution

The fourth proportional to 7,340,553.20, 10,989,834.60 and 7,340,553.20 is: 10,989,834.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,340,553.20 : 10,989,834.60 = 7,340,553.20 : x
  2. Step 2: Convert to fraction form
    7,340,553.20/10,989,834.60 = 7,340,553.20/x
  3. Step 3: Cross multiply
    7,340,553.20x = 10,989,834.60 × 7,340,553.20
  4. Step 4: Simplify right side
    7,340,553.20x = 80,671,465,540,500.72
  5. Step 5: Solve for x
    x = 80,671,465,540,500.72/7,340,553.20
  6. Step 6: Final answer
    x = 10,989,834.60

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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.