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Finding the Fourth Proportional to 591,063.75, 815,687.55 and 322,791.75

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Solution

The fourth proportional to 591,063.75, 815,687.55 and 322,791.75 is: 445,463.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,063.75 : 815,687.55 = 322,791.75 : x
  2. Step 2: Convert to fraction form
    591,063.75/815,687.55 = 322,791.75/x
  3. Step 3: Cross multiply
    591,063.75x = 815,687.55 × 322,791.75
  4. Step 4: Simplify right side
    591,063.75x = 263,297,211,717.71
  5. Step 5: Solve for x
    x = 263,297,211,717.71/591,063.75
  6. Step 6: Final answer
    x = 445,463.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.