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Finding the Fourth Proportional to 14,961.15, 20,627.21 and 12,262.43

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Solution

The fourth proportional to 14,961.15, 20,627.21 and 12,262.43 is: 16,906.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,961.15 : 20,627.21 = 12,262.43 : x
  2. Step 2: Convert to fraction form
    14,961.15/20,627.21 = 12,262.43/x
  3. Step 3: Cross multiply
    14,961.15x = 20,627.21 × 12,262.43
  4. Step 4: Simplify right side
    14,961.15x = 252,939,800.94
  5. Step 5: Solve for x
    x = 252,939,800.94/14,961.15
  6. Step 6: Final answer
    x = 16,906.44

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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.