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Finding the Fourth Proportional to 5,758.80, 8,631.08 and 2,983.87

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Solution

The fourth proportional to 5,758.80, 8,631.08 and 2,983.87 is: 4,472.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,758.80 : 8,631.08 = 2,983.87 : x
  2. Step 2: Convert to fraction form
    5,758.80/8,631.08 = 2,983.87/x
  3. Step 3: Cross multiply
    5,758.80x = 8,631.08 × 2,983.87
  4. Step 4: Simplify right side
    5,758.80x = 25,754,020.68
  5. Step 5: Solve for x
    x = 25,754,020.68/5,758.80
  6. Step 6: Final answer
    x = 4,472.12

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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.