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Finding the Fourth Proportional to 622,593, 858,853.40 and 393,067.76

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Solution

The fourth proportional to 622,593, 858,853.40 and 393,067.76 is: 542,228.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,593 : 858,853.40 = 393,067.76 : x
  2. Step 2: Convert to fraction form
    622,593/858,853.40 = 393,067.76/x
  3. Step 3: Cross multiply
    622,593x = 858,853.40 × 393,067.76
  4. Step 4: Simplify right side
    622,593x = 337,587,575,846.78
  5. Step 5: Solve for x
    x = 337,587,575,846.78/622,593
  6. Step 6: Final answer
    x = 542,228.35

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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.