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Finding the Fourth Proportional to 619,195.74, 853,699.10 and 401,018.95

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Solution

The fourth proportional to 619,195.74, 853,699.10 and 401,018.95 is: 552,893.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,195.74 : 853,699.10 = 401,018.95 : x
  2. Step 2: Convert to fraction form
    619,195.74/853,699.10 = 401,018.95/x
  3. Step 3: Cross multiply
    619,195.74x = 853,699.10 × 401,018.95
  4. Step 4: Simplify right side
    619,195.74x = 342,349,515,759.97
  5. Step 5: Solve for x
    x = 342,349,515,759.97/619,195.74
  6. Step 6: Final answer
    x = 552,893.85

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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.