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Finding the Fourth Proportional to 18,149.54, 25,035.50 and 11,423.49

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Solution

The fourth proportional to 18,149.54, 25,035.50 and 11,423.49 is: 15,757.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,149.54 : 25,035.50 = 11,423.49 : x
  2. Step 2: Convert to fraction form
    18,149.54/25,035.50 = 11,423.49/x
  3. Step 3: Cross multiply
    18,149.54x = 25,035.50 × 11,423.49
  4. Step 4: Simplify right side
    18,149.54x = 285,992,783.90
  5. Step 5: Solve for x
    x = 285,992,783.90/18,149.54
  6. Step 6: Final answer
    x = 15,757.58

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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.