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Finding the Fourth Proportional to 18,754.62, 25,877.16 and 11,199.58

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Solution

The fourth proportional to 18,754.62, 25,877.16 and 11,199.58 is: 15,452.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,754.62 : 25,877.16 = 11,199.58 : x
  2. Step 2: Convert to fraction form
    18,754.62/25,877.16 = 11,199.58/x
  3. Step 3: Cross multiply
    18,754.62x = 25,877.16 × 11,199.58
  4. Step 4: Simplify right side
    18,754.62x = 289,813,323.59
  5. Step 5: Solve for x
    x = 289,813,323.59/18,754.62
  6. Step 6: Final answer
    x = 15,452.90

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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.