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Finding the Fourth Proportional to 89,960.54, 134,657.86 and 61,715.43

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Solution

The fourth proportional to 89,960.54, 134,657.86 and 61,715.43 is: 92,379.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,960.54 : 134,657.86 = 61,715.43 : x
  2. Step 2: Convert to fraction form
    89,960.54/134,657.86 = 61,715.43/x
  3. Step 3: Cross multiply
    89,960.54x = 134,657.86 × 61,715.43
  4. Step 4: Simplify right side
    89,960.54x = 8,310,468,013.75
  5. Step 5: Solve for x
    x = 8,310,468,013.75/89,960.54
  6. Step 6: Final answer
    x = 92,379.04

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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.