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Finding the Fourth Proportional to 694,876.86, 958,920.87 and 393,070.86

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Solution

The fourth proportional to 694,876.86, 958,920.87 and 393,070.86 is: 542,432.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,876.86 : 958,920.87 = 393,070.86 : x
  2. Step 2: Convert to fraction form
    694,876.86/958,920.87 = 393,070.86/x
  3. Step 3: Cross multiply
    694,876.86x = 958,920.87 × 393,070.86
  4. Step 4: Simplify right side
    694,876.86x = 376,923,851,042.85
  5. Step 5: Solve for x
    x = 376,923,851,042.85/694,876.86
  6. Step 6: Final answer
    x = 542,432.58

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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.