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Finding the Fourth Proportional to 3,188,103,623,978, 4,782,155,435,966.80 and 3,188,103,623,978

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Solution

The fourth proportional to 3,188,103,623,978, 4,782,155,435,966.80 and 3,188,103,623,978 is: 4,782,155,435,966.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188,103,623,978 : 4,782,155,435,966.80 = 3,188,103,623,978 : x
  2. Step 2: Convert to fraction form
    3,188,103,623,978/4,782,155,435,966.80 = 3,188,103,623,978/x
  3. Step 3: Cross multiply
    3,188,103,623,978x = 4,782,155,435,966.80 × 3,188,103,623,978
  4. Step 4: Simplify right side
    3,188,103,623,978x = 15,246,007,075,831,846,201,720,832
  5. Step 5: Solve for x
    x = 15,246,007,075,831,846,201,720,832/3,188,103,623,978
  6. Step 6: Final answer
    x = 4,782,155,435,966.80

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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.