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Finding the Fourth Proportional to 313,378,610.20, 439,183,550.60 and 313,378,610.20

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Solution

The fourth proportional to 313,378,610.20, 439,183,550.60 and 313,378,610.20 is: 439,183,550.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,378,610.20 : 439,183,550.60 = 313,378,610.20 : x
  2. Step 2: Convert to fraction form
    313,378,610.20/439,183,550.60 = 313,378,610.20/x
  3. Step 3: Cross multiply
    313,378,610.20x = 439,183,550.60 × 313,378,610.20
  4. Step 4: Simplify right side
    313,378,610.20x = 137,630,730,709,729,376
  5. Step 5: Solve for x
    x = 137,630,730,709,729,376/313,378,610.20
  6. Step 6: Final answer
    x = 439,183,550.60

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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.