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Finding the Fourth Proportional to 96,690.92, 144,896.18 and 68,665.86

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Solution

The fourth proportional to 96,690.92, 144,896.18 and 68,665.86 is: 102,899.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,690.92 : 144,896.18 = 68,665.86 : x
  2. Step 2: Convert to fraction form
    96,690.92/144,896.18 = 68,665.86/x
  3. Step 3: Cross multiply
    96,690.92x = 144,896.18 × 68,665.86
  4. Step 4: Simplify right side
    96,690.92x = 9,949,420,467.09
  5. Step 5: Solve for x
    x = 9,949,420,467.09/96,690.92
  6. Step 6: Final answer
    x = 102,899.23

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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.