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Finding the Fourth Proportional to 18,336.17, 27,465.95 and 11,728.79

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Solution

The fourth proportional to 18,336.17, 27,465.95 and 11,728.79 is: 17,568.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,336.17 : 27,465.95 = 11,728.79 : x
  2. Step 2: Convert to fraction form
    18,336.17/27,465.95 = 11,728.79/x
  3. Step 3: Cross multiply
    18,336.17x = 27,465.95 × 11,728.79
  4. Step 4: Simplify right side
    18,336.17x = 322,142,163.73
  5. Step 5: Solve for x
    x = 322,142,163.73/18,336.17
  6. Step 6: Final answer
    x = 17,568.68

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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.