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Finding the Fourth Proportional to 16,383.76, 22,609.60 and 8,931.76

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Solution

The fourth proportional to 16,383.76, 22,609.60 and 8,931.76 is: 12,325.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,383.76 : 22,609.60 = 8,931.76 : x
  2. Step 2: Convert to fraction form
    16,383.76/22,609.60 = 8,931.76/x
  3. Step 3: Cross multiply
    16,383.76x = 22,609.60 × 8,931.76
  4. Step 4: Simplify right side
    16,383.76x = 201,943,520.90
  5. Step 5: Solve for x
    x = 201,943,520.90/16,383.76
  6. Step 6: Final answer
    x = 12,325.83

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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.