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Finding the Fourth Proportional to 789,797,489.40, 1,089,954,796.14 and 437,373,480.15

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Solution

The fourth proportional to 789,797,489.40, 1,089,954,796.14 and 437,373,480.15 is: 603,594,375.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,797,489.40 : 1,089,954,796.14 = 437,373,480.15 : x
  2. Step 2: Convert to fraction form
    789,797,489.40/1,089,954,796.14 = 437,373,480.15/x
  3. Step 3: Cross multiply
    789,797,489.40x = 1,089,954,796.14 × 437,373,480.15
  4. Step 4: Simplify right side
    789,797,489.40x = 476,717,322,393,935,616
  5. Step 5: Solve for x
    x = 476,717,322,393,935,616/789,797,489.40
  6. Step 6: Final answer
    x = 603,594,375.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.