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Finding the Fourth Proportional to 88,715.92, 133,143.40 and 61,887.41

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Solution

The fourth proportional to 88,715.92, 133,143.40 and 61,887.41 is: 92,879.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,715.92 : 133,143.40 = 61,887.41 : x
  2. Step 2: Convert to fraction form
    88,715.92/133,143.40 = 61,887.41/x
  3. Step 3: Cross multiply
    88,715.92x = 133,143.40 × 61,887.41
  4. Step 4: Simplify right side
    88,715.92x = 8,239,900,184.59
  5. Step 5: Solve for x
    x = 8,239,900,184.59/88,715.92
  6. Step 6: Final answer
    x = 92,879.61

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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.