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Finding the Fourth Proportional to 18,393.84, 27,583.80 and 7,863.42

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Solution

The fourth proportional to 18,393.84, 27,583.80 and 7,863.42 is: 11,792.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,393.84 : 27,583.80 = 7,863.42 : x
  2. Step 2: Convert to fraction form
    18,393.84/27,583.80 = 7,863.42/x
  3. Step 3: Cross multiply
    18,393.84x = 27,583.80 × 7,863.42
  4. Step 4: Simplify right side
    18,393.84x = 216,903,004.60
  5. Step 5: Solve for x
    x = 216,903,004.60/18,393.84
  6. Step 6: Final answer
    x = 11,792.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.