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Finding the Fourth Proportional to 627,834.54, 866,441.29 and 355,907.71

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Solution

The fourth proportional to 627,834.54, 866,441.29 and 355,907.71 is: 491,169.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,834.54 : 866,441.29 = 355,907.71 : x
  2. Step 2: Convert to fraction form
    627,834.54/866,441.29 = 355,907.71/x
  3. Step 3: Cross multiply
    627,834.54x = 866,441.29 × 355,907.71
  4. Step 4: Simplify right side
    627,834.54x = 308,373,132,317.47
  5. Step 5: Solve for x
    x = 308,373,132,317.47/627,834.54
  6. Step 6: Final answer
    x = 491,169.43

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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.