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Finding the Fourth Proportional to 663,616,936.40, 995,425,404.60 and 526,560,270.80

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Solution

The fourth proportional to 663,616,936.40, 995,425,404.60 and 526,560,270.80 is: 789,840,406.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,616,936.40 : 995,425,404.60 = 526,560,270.80 : x
  2. Step 2: Convert to fraction form
    663,616,936.40/995,425,404.60 = 526,560,270.80/x
  3. Step 3: Cross multiply
    663,616,936.40x = 995,425,404.60 × 526,560,270.80
  4. Step 4: Simplify right side
    663,616,936.40x = 524,151,470,607,375,616
  5. Step 5: Solve for x
    x = 524,151,470,607,375,616/663,616,936.40
  6. Step 6: Final answer
    x = 789,840,406.20

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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.