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Finding the Fourth Proportional to 140,989.98, 194,566.44 and 80,560.44

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Solution

The fourth proportional to 140,989.98, 194,566.44 and 80,560.44 is: 111,173.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,989.98 : 194,566.44 = 80,560.44 : x
  2. Step 2: Convert to fraction form
    140,989.98/194,566.44 = 80,560.44/x
  3. Step 3: Cross multiply
    140,989.98x = 194,566.44 × 80,560.44
  4. Step 4: Simplify right side
    140,989.98x = 15,674,358,015.63
  5. Step 5: Solve for x
    x = 15,674,358,015.63/140,989.98
  6. Step 6: Final answer
    x = 111,173.56

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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.