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Finding the Fourth Proportional to 18,611.60, 25,683.72 and 10,227.92

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Solution

The fourth proportional to 18,611.60, 25,683.72 and 10,227.92 is: 14,114.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,611.60 : 25,683.72 = 10,227.92 : x
  2. Step 2: Convert to fraction form
    18,611.60/25,683.72 = 10,227.92/x
  3. Step 3: Cross multiply
    18,611.60x = 25,683.72 × 10,227.92
  4. Step 4: Simplify right side
    18,611.60x = 262,691,033.46
  5. Step 5: Solve for x
    x = 262,691,033.46/18,611.60
  6. Step 6: Final answer
    x = 14,114.37

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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.