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Finding the Fourth Proportional to 156,696.46, 216,245.50 and 85,081.12

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Solution

The fourth proportional to 156,696.46, 216,245.50 and 85,081.12 is: 117,414.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,696.46 : 216,245.50 = 85,081.12 : x
  2. Step 2: Convert to fraction form
    156,696.46/216,245.50 = 85,081.12/x
  3. Step 3: Cross multiply
    156,696.46x = 216,245.50 × 85,081.12
  4. Step 4: Simplify right side
    156,696.46x = 18,398,408,581.64
  5. Step 5: Solve for x
    x = 18,398,408,581.64/156,696.46
  6. Step 6: Final answer
    x = 117,414.32

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