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Finding the Fourth Proportional to 627,149.77, 863,884.16 and 505,951.69

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Solution

The fourth proportional to 627,149.77, 863,884.16 and 505,951.69 is: 696,936.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,149.77 : 863,884.16 = 505,951.69 : x
  2. Step 2: Convert to fraction form
    627,149.77/863,884.16 = 505,951.69/x
  3. Step 3: Cross multiply
    627,149.77x = 863,884.16 × 505,951.69
  4. Step 4: Simplify right side
    627,149.77x = 437,083,650,716.23
  5. Step 5: Solve for x
    x = 437,083,650,716.23/627,149.77
  6. Step 6: Final answer
    x = 696,936.64

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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.