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Finding the Fourth Proportional to 186,867.80, 280,135.04 and 68,511.56

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Solution

The fourth proportional to 186,867.80, 280,135.04 and 68,511.56 is: 102,706.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,867.80 : 280,135.04 = 68,511.56 : x
  2. Step 2: Convert to fraction form
    186,867.80/280,135.04 = 68,511.56/x
  3. Step 3: Cross multiply
    186,867.80x = 280,135.04 × 68,511.56
  4. Step 4: Simplify right side
    186,867.80x = 19,192,488,601.06
  5. Step 5: Solve for x
    x = 19,192,488,601.06/186,867.80
  6. Step 6: Final answer
    x = 102,706.24

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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.