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Finding the Fourth Proportional to 186,867.56, 280,134.66 and 68,511.28

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Solution

The fourth proportional to 186,867.56, 280,134.66 and 68,511.28 is: 102,705.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,867.56 : 280,134.66 = 68,511.28 : x
  2. Step 2: Convert to fraction form
    186,867.56/280,134.66 = 68,511.28/x
  3. Step 3: Cross multiply
    186,867.56x = 280,134.66 × 68,511.28
  4. Step 4: Simplify right side
    186,867.56x = 19,192,384,128.96
  5. Step 5: Solve for x
    x = 19,192,384,128.96/186,867.56
  6. Step 6: Final answer
    x = 102,705.81

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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.