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Finding the Fourth Proportional to 18,124.56, 25,014.42 and 13,104.99

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Solution

The fourth proportional to 18,124.56, 25,014.42 and 13,104.99 is: 18,086.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,124.56 : 25,014.42 = 13,104.99 : x
  2. Step 2: Convert to fraction form
    18,124.56/25,014.42 = 13,104.99/x
  3. Step 3: Cross multiply
    18,124.56x = 25,014.42 × 13,104.99
  4. Step 4: Simplify right side
    18,124.56x = 327,813,723.96
  5. Step 5: Solve for x
    x = 327,813,723.96/18,124.56
  6. Step 6: Final answer
    x = 18,086.71

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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.