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Finding the Fourth Proportional to 18,843.84, 25,980.48 and 11,767.68

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Solution

The fourth proportional to 18,843.84, 25,980.48 and 11,767.68 is: 16,224.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,843.84 : 25,980.48 = 11,767.68 : x
  2. Step 2: Convert to fraction form
    18,843.84/25,980.48 = 11,767.68/x
  3. Step 3: Cross multiply
    18,843.84x = 25,980.48 × 11,767.68
  4. Step 4: Simplify right side
    18,843.84x = 305,729,974.89
  5. Step 5: Solve for x
    x = 305,729,974.89/18,843.84
  6. Step 6: Final answer
    x = 16,224.40

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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.