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Finding the Fourth Proportional to 186,983.43, 280,308.42 and 68,627.31

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Solution

The fourth proportional to 186,983.43, 280,308.42 and 68,627.31 is: 102,879.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,983.43 : 280,308.42 = 68,627.31 : x
  2. Step 2: Convert to fraction form
    186,983.43/280,308.42 = 68,627.31/x
  3. Step 3: Cross multiply
    186,983.43x = 280,308.42 × 68,627.31
  4. Step 4: Simplify right side
    186,983.43x = 19,236,812,834.95
  5. Step 5: Solve for x
    x = 19,236,812,834.95/186,983.43
  6. Step 6: Final answer
    x = 102,879.77

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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.