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Finding the Fourth Proportional to 18,283.94, 25,231.33 and 10,831.94

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Solution

The fourth proportional to 18,283.94, 25,231.33 and 10,831.94 is: 14,947.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,283.94 : 25,231.33 = 10,831.94 : x
  2. Step 2: Convert to fraction form
    18,283.94/25,231.33 = 10,831.94/x
  3. Step 3: Cross multiply
    18,283.94x = 25,231.33 × 10,831.94
  4. Step 4: Simplify right side
    18,283.94x = 273,304,252.68
  5. Step 5: Solve for x
    x = 273,304,252.68/18,283.94
  6. Step 6: Final answer
    x = 14,947.78

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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.