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Finding the Fourth Proportional to 118,644.59, 178,025.31 and 55,469.05

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Solution

The fourth proportional to 118,644.59, 178,025.31 and 55,469.05 is: 83,230.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,644.59 : 178,025.31 = 55,469.05 : x
  2. Step 2: Convert to fraction form
    118,644.59/178,025.31 = 55,469.05/x
  3. Step 3: Cross multiply
    118,644.59x = 178,025.31 × 55,469.05
  4. Step 4: Simplify right side
    118,644.59x = 9,874,894,376.59
  5. Step 5: Solve for x
    x = 9,874,894,376.59/118,644.59
  6. Step 6: Final answer
    x = 83,230.88

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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.