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Finding the Fourth Proportional to 557,286.34, 769,290.59 and 376,243.51

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Solution

The fourth proportional to 557,286.34, 769,290.59 and 376,243.51 is: 519,375.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,286.34 : 769,290.59 = 376,243.51 : x
  2. Step 2: Convert to fraction form
    557,286.34/769,290.59 = 376,243.51/x
  3. Step 3: Cross multiply
    557,286.34x = 769,290.59 × 376,243.51
  4. Step 4: Simplify right side
    557,286.34x = 289,440,591,791.57
  5. Step 5: Solve for x
    x = 289,440,591,791.57/557,286.34
  6. Step 6: Final answer
    x = 519,375.00

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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.