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Finding the Fourth Proportional to 178,872.80, 267,920.40 and 108,629.60

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Solution

The fourth proportional to 178,872.80, 267,920.40 and 108,629.60 is: 162,708.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,872.80 : 267,920.40 = 108,629.60 : x
  2. Step 2: Convert to fraction form
    178,872.80/267,920.40 = 108,629.60/x
  3. Step 3: Cross multiply
    178,872.80x = 267,920.40 × 108,629.60
  4. Step 4: Simplify right side
    178,872.80x = 29,104,085,883.84
  5. Step 5: Solve for x
    x = 29,104,085,883.84/178,872.80
  6. Step 6: Final answer
    x = 162,708.28

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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.