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Finding the Fourth Proportional to 156,790.92, 216,310.32 and 88,792.20

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Solution

The fourth proportional to 156,790.92, 216,310.32 and 88,792.20 is: 122,498.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,790.92 : 216,310.32 = 88,792.20 : x
  2. Step 2: Convert to fraction form
    156,790.92/216,310.32 = 88,792.20/x
  3. Step 3: Cross multiply
    156,790.92x = 216,310.32 × 88,792.20
  4. Step 4: Simplify right side
    156,790.92x = 19,206,669,195.50
  5. Step 5: Solve for x
    x = 19,206,669,195.50/156,790.92
  6. Step 6: Final answer
    x = 122,498.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.