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Finding the Fourth Proportional to 5,309,471,996.80, 7,419,485,844.80 and 5,309,471,996.80

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Solution

The fourth proportional to 5,309,471,996.80, 7,419,485,844.80 and 5,309,471,996.80 is: 7,419,485,844.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,309,471,996.80 : 7,419,485,844.80 = 5,309,471,996.80 : x
  2. Step 2: Convert to fraction form
    5,309,471,996.80/7,419,485,844.80 = 5,309,471,996.80/x
  3. Step 3: Cross multiply
    5,309,471,996.80x = 7,419,485,844.80 × 5,309,471,996.80
  4. Step 4: Simplify right side
    5,309,471,996.80x = 39,393,552,323,619,594,240
  5. Step 5: Solve for x
    x = 39,393,552,323,619,594,240/5,309,471,996.80
  6. Step 6: Final answer
    x = 7,419,485,844.80

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Half scale
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Double scale
Find fourth proportional to 5,309,471,997.80, 7,419,485,846.20 and 5,309,471,997.80
Similar ratio
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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.