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Finding the Fourth Proportional to 18,797.62, 25,928.98 and 12,091.99

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Solution

The fourth proportional to 18,797.62, 25,928.98 and 12,091.99 is: 16,679.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,797.62 : 25,928.98 = 12,091.99 : x
  2. Step 2: Convert to fraction form
    18,797.62/25,928.98 = 12,091.99/x
  3. Step 3: Cross multiply
    18,797.62x = 25,928.98 × 12,091.99
  4. Step 4: Simplify right side
    18,797.62x = 313,532,966.87
  5. Step 5: Solve for x
    x = 313,532,966.87/18,797.62
  6. Step 6: Final answer
    x = 16,679.40

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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.