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Finding the Fourth Proportional to 18,672.88, 25,765 and 11,601.04

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Solution

The fourth proportional to 18,672.88, 25,765 and 11,601.04 is: 16,007.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,672.88 : 25,765 = 11,601.04 : x
  2. Step 2: Convert to fraction form
    18,672.88/25,765 = 11,601.04/x
  3. Step 3: Cross multiply
    18,672.88x = 25,765 × 11,601.04
  4. Step 4: Simplify right side
    18,672.88x = 298,900,795.60
  5. Step 5: Solve for x
    x = 298,900,795.60/18,672.88
  6. Step 6: Final answer
    x = 16,007.21

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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.