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Finding the Fourth Proportional to 3,251.70, 4,871.07 and 3,057.30

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Solution

The fourth proportional to 3,251.70, 4,871.07 and 3,057.30 is: 4,579.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,251.70 : 4,871.07 = 3,057.30 : x
  2. Step 2: Convert to fraction form
    3,251.70/4,871.07 = 3,057.30/x
  3. Step 3: Cross multiply
    3,251.70x = 4,871.07 × 3,057.30
  4. Step 4: Simplify right side
    3,251.70x = 14,892,322.31
  5. Step 5: Solve for x
    x = 14,892,322.31/3,251.70
  6. Step 6: Final answer
    x = 4,579.86

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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.