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Finding the Fourth Proportional to 118,981.76, 178,358.86 and 44,081.80

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Solution

The fourth proportional to 118,981.76, 178,358.86 and 44,081.80 is: 66,080.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,981.76 : 178,358.86 = 44,081.80 : x
  2. Step 2: Convert to fraction form
    118,981.76/178,358.86 = 44,081.80/x
  3. Step 3: Cross multiply
    118,981.76x = 178,358.86 × 44,081.80
  4. Step 4: Simplify right side
    118,981.76x = 7,862,379,203.95
  5. Step 5: Solve for x
    x = 7,862,379,203.95/118,981.76
  6. Step 6: Final answer
    x = 66,080.54

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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.