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Finding the Fourth Proportional to 11,672.70, 16,108.65 and 6,367.86

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Solution

The fourth proportional to 11,672.70, 16,108.65 and 6,367.86 is: 8,787.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,672.70 : 16,108.65 = 6,367.86 : x
  2. Step 2: Convert to fraction form
    11,672.70/16,108.65 = 6,367.86/x
  3. Step 3: Cross multiply
    11,672.70x = 16,108.65 × 6,367.86
  4. Step 4: Simplify right side
    11,672.70x = 102,577,627.99
  5. Step 5: Solve for x
    x = 102,577,627.99/11,672.70
  6. Step 6: Final answer
    x = 8,787.82

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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.