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Finding the Fourth Proportional to 18,809.14, 25,944.20 and 12,084.16

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Solution

The fourth proportional to 18,809.14, 25,944.20 and 12,084.16 is: 16,668.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,809.14 : 25,944.20 = 12,084.16 : x
  2. Step 2: Convert to fraction form
    18,809.14/25,944.20 = 12,084.16/x
  3. Step 3: Cross multiply
    18,809.14x = 25,944.20 × 12,084.16
  4. Step 4: Simplify right side
    18,809.14x = 313,513,863.87
  5. Step 5: Solve for x
    x = 313,513,863.87/18,809.14
  6. Step 6: Final answer
    x = 16,668.17

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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.