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Finding the Fourth Proportional to 521,183.97, 780,452.82 and 436,722.03

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Solution

The fourth proportional to 521,183.97, 780,452.82 and 436,722.03 is: 653,974.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,183.97 : 780,452.82 = 436,722.03 : x
  2. Step 2: Convert to fraction form
    521,183.97/780,452.82 = 436,722.03/x
  3. Step 3: Cross multiply
    521,183.97x = 780,452.82 × 436,722.03
  4. Step 4: Simplify right side
    521,183.97x = 340,840,939,869.63
  5. Step 5: Solve for x
    x = 340,840,939,869.63/521,183.97
  6. Step 6: Final answer
    x = 653,974.33

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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.