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Finding the Fourth Proportional to 125,996.73, 188,895.20 and 66,013.71

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Solution

The fourth proportional to 125,996.73, 188,895.20 and 66,013.71 is: 98,968.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,996.73 : 188,895.20 = 66,013.71 : x
  2. Step 2: Convert to fraction form
    125,996.73/188,895.20 = 66,013.71/x
  3. Step 3: Cross multiply
    125,996.73x = 188,895.20 × 66,013.71
  4. Step 4: Simplify right side
    125,996.73x = 12,469,672,623.12
  5. Step 5: Solve for x
    x = 12,469,672,623.12/125,996.73
  6. Step 6: Final answer
    x = 98,968.22

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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.