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Finding the Fourth Proportional to 8,869.92, 12,245.49 and 5,889.84

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Solution

The fourth proportional to 8,869.92, 12,245.49 and 5,889.84 is: 8,131.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,869.92 : 12,245.49 = 5,889.84 : x
  2. Step 2: Convert to fraction form
    8,869.92/12,245.49 = 5,889.84/x
  3. Step 3: Cross multiply
    8,869.92x = 12,245.49 × 5,889.84
  4. Step 4: Simplify right side
    8,869.92x = 72,123,976.82
  5. Step 5: Solve for x
    x = 72,123,976.82/8,869.92
  6. Step 6: Final answer
    x = 8,131.30

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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.