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Finding the Fourth Proportional to 436,268.40, 654,402.60 and 419,938.80

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Solution

The fourth proportional to 436,268.40, 654,402.60 and 419,938.80 is: 629,908.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,268.40 : 654,402.60 = 419,938.80 : x
  2. Step 2: Convert to fraction form
    436,268.40/654,402.60 = 419,938.80/x
  3. Step 3: Cross multiply
    436,268.40x = 654,402.60 × 419,938.80
  4. Step 4: Simplify right side
    436,268.40x = 274,809,042,560.88
  5. Step 5: Solve for x
    x = 274,809,042,560.88/436,268.40
  6. Step 6: Final answer
    x = 629,908.20

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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.