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Finding the Fourth Proportional to 3,310.94, 4,966.55 and 845.83

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Solution

The fourth proportional to 3,310.94, 4,966.55 and 845.83 is: 1,268.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,310.94 : 4,966.55 = 845.83 : x
  2. Step 2: Convert to fraction form
    3,310.94/4,966.55 = 845.83/x
  3. Step 3: Cross multiply
    3,310.94x = 4,966.55 × 845.83
  4. Step 4: Simplify right side
    3,310.94x = 4,200,856.99
  5. Step 5: Solve for x
    x = 4,200,856.99/3,310.94
  6. Step 6: Final answer
    x = 1,268.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.