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Finding the Fourth Proportional to 2,096.48, 3,141.96 and 862.40

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Solution

The fourth proportional to 2,096.48, 3,141.96 and 862.40 is: 1,292.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,096.48 : 3,141.96 = 862.40 : x
  2. Step 2: Convert to fraction form
    2,096.48/3,141.96 = 862.40/x
  3. Step 3: Cross multiply
    2,096.48x = 3,141.96 × 862.40
  4. Step 4: Simplify right side
    2,096.48x = 2,709,626.30
  5. Step 5: Solve for x
    x = 2,709,626.30/2,096.48
  6. Step 6: Final answer
    x = 1,292.46

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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.