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Finding the Fourth Proportional to 11,861.79, 17,793.51 and 3,541.12

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Solution

The fourth proportional to 11,861.79, 17,793.51 and 3,541.12 is: 5,311.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,861.79 : 17,793.51 = 3,541.12 : x
  2. Step 2: Convert to fraction form
    11,861.79/17,793.51 = 3,541.12/x
  3. Step 3: Cross multiply
    11,861.79x = 17,793.51 × 3,541.12
  4. Step 4: Simplify right side
    11,861.79x = 63,008,954.13
  5. Step 5: Solve for x
    x = 63,008,954.13/11,861.79
  6. Step 6: Final answer
    x = 5,311.93

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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.