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Finding the Fourth Proportional to 118,921.71, 178,409.87 and 40,033.83

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Solution

The fourth proportional to 118,921.71, 178,409.87 and 40,033.83 is: 60,059.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,921.71 : 178,409.87 = 40,033.83 : x
  2. Step 2: Convert to fraction form
    118,921.71/178,409.87 = 40,033.83/x
  3. Step 3: Cross multiply
    118,921.71x = 178,409.87 × 40,033.83
  4. Step 4: Simplify right side
    118,921.71x = 7,142,430,205.73
  5. Step 5: Solve for x
    x = 7,142,430,205.73/118,921.71
  6. Step 6: Final answer
    x = 60,059.94

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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.