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Finding the Fourth Proportional to 2,095.37, 3,143.00 and 862.85

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Solution

The fourth proportional to 2,095.37, 3,143.00 and 862.85 is: 1,294.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,095.37 : 3,143.00 = 862.85 : x
  2. Step 2: Convert to fraction form
    2,095.37/3,143.00 = 862.85/x
  3. Step 3: Cross multiply
    2,095.37x = 3,143.00 × 862.85
  4. Step 4: Simplify right side
    2,095.37x = 2,711,947.56
  5. Step 5: Solve for x
    x = 2,711,947.56/2,095.37
  6. Step 6: Final answer
    x = 1,294.26

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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.