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Finding the Fourth Proportional to 18,601.67, 25,669.60 and 10,103.60

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Solution

The fourth proportional to 18,601.67, 25,669.60 and 10,103.60 is: 13,942.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,601.67 : 25,669.60 = 10,103.60 : x
  2. Step 2: Convert to fraction form
    18,601.67/25,669.60 = 10,103.60/x
  3. Step 3: Cross multiply
    18,601.67x = 25,669.60 × 10,103.60
  4. Step 4: Simplify right side
    18,601.67x = 259,355,409.47
  5. Step 5: Solve for x
    x = 259,355,409.47/18,601.67
  6. Step 6: Final answer
    x = 13,942.59

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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.