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Finding the Fourth Proportional to 18,602.28, 27,853.74 and 15,649.83

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Solution

The fourth proportional to 18,602.28, 27,853.74 and 15,649.83 is: 23,432.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,602.28 : 27,853.74 = 15,649.83 : x
  2. Step 2: Convert to fraction form
    18,602.28/27,853.74 = 15,649.83/x
  3. Step 3: Cross multiply
    18,602.28x = 27,853.74 × 15,649.83
  4. Step 4: Simplify right side
    18,602.28x = 435,906,295.86
  5. Step 5: Solve for x
    x = 435,906,295.86/18,602.28
  6. Step 6: Final answer
    x = 23,432.95

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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.