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Finding the Fourth Proportional to 627,724.35, 866,255.98 and 355,843.53

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Solution

The fourth proportional to 627,724.35, 866,255.98 and 355,843.53 is: 491,062.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,724.35 : 866,255.98 = 355,843.53 : x
  2. Step 2: Convert to fraction form
    627,724.35/866,255.98 = 355,843.53/x
  3. Step 3: Cross multiply
    627,724.35x = 866,255.98 × 355,843.53
  4. Step 4: Simplify right side
    627,724.35x = 308,251,585,806.81
  5. Step 5: Solve for x
    x = 308,251,585,806.81/627,724.35
  6. Step 6: Final answer
    x = 491,062.02

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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.