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Finding the Fourth Proportional to 2,095.74, 3,142.35 and 863.96

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Solution

The fourth proportional to 2,095.74, 3,142.35 and 863.96 is: 1,295.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,095.74 : 3,142.35 = 863.96 : x
  2. Step 2: Convert to fraction form
    2,095.74/3,142.35 = 863.96/x
  3. Step 3: Cross multiply
    2,095.74x = 3,142.35 × 863.96
  4. Step 4: Simplify right side
    2,095.74x = 2,714,848.99
  5. Step 5: Solve for x
    x = 2,714,848.99/2,095.74
  6. Step 6: Final answer
    x = 1,295.41

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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.