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Finding the Fourth Proportional to 18,601.76, 25,669.92 and 10,103.48

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Solution

The fourth proportional to 18,601.76, 25,669.92 and 10,103.48 is: 13,942.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,601.76 : 25,669.92 = 10,103.48 : x
  2. Step 2: Convert to fraction form
    18,601.76/25,669.92 = 10,103.48/x
  3. Step 3: Cross multiply
    18,601.76x = 25,669.92 × 10,103.48
  4. Step 4: Simplify right side
    18,601.76x = 259,355,523.32
  5. Step 5: Solve for x
    x = 259,355,523.32/18,601.76
  6. Step 6: Final answer
    x = 13,942.53

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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.