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Finding the Fourth Proportional to 18,608.66, 25,660.24 and 11,894.58

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Solution

The fourth proportional to 18,608.66, 25,660.24 and 11,894.58 is: 16,401.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,608.66 : 25,660.24 = 11,894.58 : x
  2. Step 2: Convert to fraction form
    18,608.66/25,660.24 = 11,894.58/x
  3. Step 3: Cross multiply
    18,608.66x = 25,660.24 × 11,894.58
  4. Step 4: Simplify right side
    18,608.66x = 305,217,777.50
  5. Step 5: Solve for x
    x = 305,217,777.50/18,608.66
  6. Step 6: Final answer
    x = 16,401.92

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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.