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Finding the Fourth Proportional to 16,313.76, 22,512.86 and 8,861.76

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Solution

The fourth proportional to 16,313.76, 22,512.86 and 8,861.76 is: 12,229.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,313.76 : 22,512.86 = 8,861.76 : x
  2. Step 2: Convert to fraction form
    16,313.76/22,512.86 = 8,861.76/x
  3. Step 3: Cross multiply
    16,313.76x = 22,512.86 × 8,861.76
  4. Step 4: Simplify right side
    16,313.76x = 199,503,562.23
  5. Step 5: Solve for x
    x = 199,503,562.23/16,313.76
  6. Step 6: Final answer
    x = 12,229.16

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1.5x scale

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.