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Finding the Fourth Proportional to 919,608.20, 1,379,396.20 and 413,811.19

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Solution

The fourth proportional to 919,608.20, 1,379,396.20 and 413,811.19 is: 620,709.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,608.20 : 1,379,396.20 = 413,811.19 : x
  2. Step 2: Convert to fraction form
    919,608.20/1,379,396.20 = 413,811.19/x
  3. Step 3: Cross multiply
    919,608.20x = 1,379,396.20 × 413,811.19
  4. Step 4: Simplify right side
    919,608.20x = 570,809,583,003.48
  5. Step 5: Solve for x
    x = 570,809,583,003.48/919,608.20
  6. Step 6: Final answer
    x = 620,709.54

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.