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Finding the Fourth Proportional to 627,660.20, 866,369.24 and 401,306.60

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Solution

The fourth proportional to 627,660.20, 866,369.24 and 401,306.60 is: 553,929.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,660.20 : 866,369.24 = 401,306.60 : x
  2. Step 2: Convert to fraction form
    627,660.20/866,369.24 = 401,306.60/x
  3. Step 3: Cross multiply
    627,660.20x = 866,369.24 × 401,306.60
  4. Step 4: Simplify right side
    627,660.20x = 347,679,694,048.98
  5. Step 5: Solve for x
    x = 347,679,694,048.98/627,660.20
  6. Step 6: Final answer
    x = 553,929.81

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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.