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Finding the Fourth Proportional to 118,620.37, 178,000.71 and 43,792.57

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Solution

The fourth proportional to 118,620.37, 178,000.71 and 43,792.57 is: 65,714.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,620.37 : 178,000.71 = 43,792.57 : x
  2. Step 2: Convert to fraction form
    118,620.37/178,000.71 = 43,792.57/x
  3. Step 3: Cross multiply
    118,620.37x = 178,000.71 × 43,792.57
  4. Step 4: Simplify right side
    118,620.37x = 7,795,108,552.72
  5. Step 5: Solve for x
    x = 7,795,108,552.72/118,620.37
  6. Step 6: Final answer
    x = 65,714.76

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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.