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Finding the Fourth Proportional to 87,894.92, 131,845.64 and 45,188.93

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Solution

The fourth proportional to 87,894.92, 131,845.64 and 45,188.93 is: 67,785.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,894.92 : 131,845.64 = 45,188.93 : x
  2. Step 2: Convert to fraction form
    87,894.92/131,845.64 = 45,188.93/x
  3. Step 3: Cross multiply
    87,894.92x = 131,845.64 × 45,188.93
  4. Step 4: Simplify right side
    87,894.92x = 5,957,962,511.59
  5. Step 5: Solve for x
    x = 5,957,962,511.59/87,894.92
  6. Step 6: Final answer
    x = 67,785.06

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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.