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Finding the Fourth Proportional to 186,758.73, 280,155.51 and 74,411.73

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Solution

The fourth proportional to 186,758.73, 280,155.51 and 74,411.73 is: 111,624.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,758.73 : 280,155.51 = 74,411.73 : x
  2. Step 2: Convert to fraction form
    186,758.73/280,155.51 = 74,411.73/x
  3. Step 3: Cross multiply
    186,758.73x = 280,155.51 × 74,411.73
  4. Step 4: Simplify right side
    186,758.73x = 20,846,856,168.13
  5. Step 5: Solve for x
    x = 20,846,856,168.13/186,758.73
  6. Step 6: Final answer
    x = 111,624.53

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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.