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Finding the Fourth Proportional to 119,297.91, 178,815.65 and 49,138.95

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Solution

The fourth proportional to 119,297.91, 178,815.65 and 49,138.95 is: 73,654.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,297.91 : 178,815.65 = 49,138.95 : x
  2. Step 2: Convert to fraction form
    119,297.91/178,815.65 = 49,138.95/x
  3. Step 3: Cross multiply
    119,297.91x = 178,815.65 × 49,138.95
  4. Step 4: Simplify right side
    119,297.91x = 8,786,813,284.57
  5. Step 5: Solve for x
    x = 8,786,813,284.57/119,297.91
  6. Step 6: Final answer
    x = 73,654.38

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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.