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Finding the Fourth Proportional to 3,108.95, 4,663.27 and 1,161

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Solution

The fourth proportional to 3,108.95, 4,663.27 and 1,161 is: 1,741.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.95 : 4,663.27 = 1,161 : x
  2. Step 2: Convert to fraction form
    3,108.95/4,663.27 = 1,161/x
  3. Step 3: Cross multiply
    3,108.95x = 4,663.27 × 1,161
  4. Step 4: Simplify right side
    3,108.95x = 5,414,057.92
  5. Step 5: Solve for x
    x = 5,414,057.92/3,108.95
  6. Step 6: Final answer
    x = 1,741.44

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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.