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Finding the Fourth Proportional to 627,431.94, 865,860.84 and 340,953.17

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Solution

The fourth proportional to 627,431.94, 865,860.84 and 340,953.17 is: 470,517.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,431.94 : 865,860.84 = 340,953.17 : x
  2. Step 2: Convert to fraction form
    627,431.94/865,860.84 = 340,953.17/x
  3. Step 3: Cross multiply
    627,431.94x = 865,860.84 × 340,953.17
  4. Step 4: Simplify right side
    627,431.94x = 295,217,993,847.56
  5. Step 5: Solve for x
    x = 295,217,993,847.56/627,431.94
  6. Step 6: Final answer
    x = 470,517.96

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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.