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Finding the Fourth Proportional to 619,187.43, 853,687.66 and 401,010.64

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Solution

The fourth proportional to 619,187.43, 853,687.66 and 401,010.64 is: 552,882.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,187.43 : 853,687.66 = 401,010.64 : x
  2. Step 2: Convert to fraction form
    619,187.43/853,687.66 = 401,010.64/x
  3. Step 3: Cross multiply
    619,187.43x = 853,687.66 × 401,010.64
  4. Step 4: Simplify right side
    619,187.43x = 342,337,834,896.70
  5. Step 5: Solve for x
    x = 342,337,834,896.70/619,187.43
  6. Step 6: Final answer
    x = 552,882.40

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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.