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Finding the Fourth Proportional to 618,983.88, 853,755.30 and 568,158

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Solution

The fourth proportional to 618,983.88, 853,755.30 and 568,158 is: 783,651.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,983.88 : 853,755.30 = 568,158 : x
  2. Step 2: Convert to fraction form
    618,983.88/853,755.30 = 568,158/x
  3. Step 3: Cross multiply
    618,983.88x = 853,755.30 × 568,158
  4. Step 4: Simplify right side
    618,983.88x = 485,067,903,737.40
  5. Step 5: Solve for x
    x = 485,067,903,737.40/618,983.88
  6. Step 6: Final answer
    x = 783,651.92

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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.