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Finding the Fourth Proportional to 5,993,670.40, 8,990,505.60 and 3,978,131.20

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Solution

The fourth proportional to 5,993,670.40, 8,990,505.60 and 3,978,131.20 is: 5,967,196.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,993,670.40 : 8,990,505.60 = 3,978,131.20 : x
  2. Step 2: Convert to fraction form
    5,993,670.40/8,990,505.60 = 3,978,131.20/x
  3. Step 3: Cross multiply
    5,993,670.40x = 8,990,505.60 × 3,978,131.20
  4. Step 4: Simplify right side
    5,993,670.40x = 35,765,410,831,134.72
  5. Step 5: Solve for x
    x = 35,765,410,831,134.72/5,993,670.40
  6. Step 6: Final answer
    x = 5,967,196.80

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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.