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Finding the Fourth Proportional to 18,611.87, 25,685.96 and 10,230.11

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Solution

The fourth proportional to 18,611.87, 25,685.96 and 10,230.11 is: 14,118.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,611.87 : 25,685.96 = 10,230.11 : x
  2. Step 2: Convert to fraction form
    18,611.87/25,685.96 = 10,230.11/x
  3. Step 3: Cross multiply
    18,611.87x = 25,685.96 × 10,230.11
  4. Step 4: Simplify right side
    18,611.87x = 262,770,196.26
  5. Step 5: Solve for x
    x = 262,770,196.26/18,611.87
  6. Step 6: Final answer
    x = 14,118.42

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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.