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Finding the Fourth Proportional to 186,863.18, 280,382.25 and 81,668.48

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Solution

The fourth proportional to 186,863.18, 280,382.25 and 81,668.48 is: 122,540.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,863.18 : 280,382.25 = 81,668.48 : x
  2. Step 2: Convert to fraction form
    186,863.18/280,382.25 = 81,668.48/x
  3. Step 3: Cross multiply
    186,863.18x = 280,382.25 × 81,668.48
  4. Step 4: Simplify right side
    186,863.18x = 22,898,390,774.57
  5. Step 5: Solve for x
    x = 22,898,390,774.57/186,863.18
  6. Step 6: Final answer
    x = 122,540.95

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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.