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Finding the Fourth Proportional to 681,627.91, 940,591.19 and 395,166.45

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Solution

The fourth proportional to 681,627.91, 940,591.19 and 395,166.45 is: 545,297.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,627.91 : 940,591.19 = 395,166.45 : x
  2. Step 2: Convert to fraction form
    681,627.91/940,591.19 = 395,166.45/x
  3. Step 3: Cross multiply
    681,627.91x = 940,591.19 × 395,166.45
  4. Step 4: Simplify right side
    681,627.91x = 371,690,081,453.58
  5. Step 5: Solve for x
    x = 371,690,081,453.58/681,627.91
  6. Step 6: Final answer
    x = 545,297.63

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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.