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Finding the Fourth Proportional to 3,189,138,859.20, 4,453,910,491.20 and 3,189,138,859.20

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Solution

The fourth proportional to 3,189,138,859.20, 4,453,910,491.20 and 3,189,138,859.20 is: 4,453,910,491.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189,138,859.20 : 4,453,910,491.20 = 3,189,138,859.20 : x
  2. Step 2: Convert to fraction form
    3,189,138,859.20/4,453,910,491.20 = 3,189,138,859.20/x
  3. Step 3: Cross multiply
    3,189,138,859.20x = 4,453,910,491.20 × 3,189,138,859.20
  4. Step 4: Simplify right side
    3,189,138,859.20x = 14,204,139,022,884,478,976
  5. Step 5: Solve for x
    x = 14,204,139,022,884,478,976/3,189,138,859.20
  6. Step 6: Final answer
    x = 4,453,910,491.20

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Double scale
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1.5x scale

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.