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Finding the Fourth Proportional to 148,061.44, 204,326.40 and 80,992

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Solution

The fourth proportional to 148,061.44, 204,326.40 and 80,992 is: 111,769.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,061.44 : 204,326.40 = 80,992 : x
  2. Step 2: Convert to fraction form
    148,061.44/204,326.40 = 80,992/x
  3. Step 3: Cross multiply
    148,061.44x = 204,326.40 × 80,992
  4. Step 4: Simplify right side
    148,061.44x = 16,548,803,788.80
  5. Step 5: Solve for x
    x = 16,548,803,788.80/148,061.44
  6. Step 6: Final answer
    x = 111,769.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.