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Finding the Fourth Proportional to 627,942.20, 866,533.82 and 356,028.39

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Solution

The fourth proportional to 627,942.20, 866,533.82 and 356,028.39 is: 491,304.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,942.20 : 866,533.82 = 356,028.39 : x
  2. Step 2: Convert to fraction form
    627,942.20/866,533.82 = 356,028.39/x
  3. Step 3: Cross multiply
    627,942.20x = 866,533.82 × 356,028.39
  4. Step 4: Simplify right side
    627,942.20x = 308,510,639,035.01
  5. Step 5: Solve for x
    x = 308,510,639,035.01/627,942.20
  6. Step 6: Final answer
    x = 491,304.20

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1.5x scale

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.