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Finding the Fourth Proportional to 419,781.89, 629,766.39 and 153,536.51

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Solution

The fourth proportional to 419,781.89, 629,766.39 and 153,536.51 is: 230,338.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,781.89 : 629,766.39 = 153,536.51 : x
  2. Step 2: Convert to fraction form
    419,781.89/629,766.39 = 153,536.51/x
  3. Step 3: Cross multiply
    419,781.89x = 629,766.39 × 153,536.51
  4. Step 4: Simplify right side
    419,781.89x = 96,692,135,786.08
  5. Step 5: Solve for x
    x = 96,692,135,786.08/419,781.89
  6. Step 6: Final answer
    x = 230,338.99

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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.