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Finding the Fourth Proportional to 87,333.56, 130,912.32 and 49,881.32

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Solution

The fourth proportional to 87,333.56, 130,912.32 and 49,881.32 is: 74,771.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,333.56 : 130,912.32 = 49,881.32 : x
  2. Step 2: Convert to fraction form
    87,333.56/130,912.32 = 49,881.32/x
  3. Step 3: Cross multiply
    87,333.56x = 130,912.32 × 49,881.32
  4. Step 4: Simplify right side
    87,333.56x = 6,530,079,325.86
  5. Step 5: Solve for x
    x = 6,530,079,325.86/87,333.56
  6. Step 6: Final answer
    x = 74,771.71

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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.