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Finding the Fourth Proportional to 79,696.85, 109,981.62 and 43,886.77

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Solution

The fourth proportional to 79,696.85, 109,981.62 and 43,886.77 is: 60,563.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,696.85 : 109,981.62 = 43,886.77 : x
  2. Step 2: Convert to fraction form
    79,696.85/109,981.62 = 43,886.77/x
  3. Step 3: Cross multiply
    79,696.85x = 109,981.62 × 43,886.77
  4. Step 4: Simplify right side
    79,696.85x = 4,826,737,786.21
  5. Step 5: Solve for x
    x = 4,826,737,786.21/79,696.85
  6. Step 6: Final answer
    x = 60,563.72

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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.