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Finding the Fourth Proportional to 619,352.25, 853,888.08 and 404,118.63

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Solution

The fourth proportional to 619,352.25, 853,888.08 and 404,118.63 is: 557,149.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,352.25 : 853,888.08 = 404,118.63 : x
  2. Step 2: Convert to fraction form
    619,352.25/853,888.08 = 404,118.63/x
  3. Step 3: Cross multiply
    619,352.25x = 853,888.08 × 404,118.63
  4. Step 4: Simplify right side
    619,352.25x = 345,072,081,062.93
  5. Step 5: Solve for x
    x = 345,072,081,062.93/619,352.25
  6. Step 6: Final answer
    x = 557,149.96

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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.