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Finding the Fourth Proportional to 343,893.78, 515,605.37 and 175,087.44

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Solution

The fourth proportional to 343,893.78, 515,605.37 and 175,087.44 is: 262,511.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,893.78 : 515,605.37 = 175,087.44 : x
  2. Step 2: Convert to fraction form
    343,893.78/515,605.37 = 175,087.44/x
  3. Step 3: Cross multiply
    343,893.78x = 515,605.37 × 175,087.44
  4. Step 4: Simplify right side
    343,893.78x = 90,276,023,408.12
  5. Step 5: Solve for x
    x = 90,276,023,408.12/343,893.78
  6. Step 6: Final answer
    x = 262,511.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.