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Finding the Fourth Proportional to 118,757.66, 178,111.88 and 43,826.60

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Solution

The fourth proportional to 118,757.66, 178,111.88 and 43,826.60 is: 65,730.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,757.66 : 178,111.88 = 43,826.60 : x
  2. Step 2: Convert to fraction form
    118,757.66/178,111.88 = 43,826.60/x
  3. Step 3: Cross multiply
    118,757.66x = 178,111.88 × 43,826.60
  4. Step 4: Simplify right side
    118,757.66x = 7,806,037,010.32
  5. Step 5: Solve for x
    x = 7,806,037,010.32/118,757.66
  6. Step 6: Final answer
    x = 65,730.81

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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.