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Finding the Fourth Proportional to 18,863.71, 28,299.95 and 5,536.17

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Solution

The fourth proportional to 18,863.71, 28,299.95 and 5,536.17 is: 8,305.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,863.71 : 28,299.95 = 5,536.17 : x
  2. Step 2: Convert to fraction form
    18,863.71/28,299.95 = 5,536.17/x
  3. Step 3: Cross multiply
    18,863.71x = 28,299.95 × 5,536.17
  4. Step 4: Simplify right side
    18,863.71x = 156,673,334.19
  5. Step 5: Solve for x
    x = 156,673,334.19/18,863.71
  6. Step 6: Final answer
    x = 8,305.54

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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.