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Finding the Fourth Proportional to 173,881.98, 260,892.09 and 80,431.74

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Solution

The fourth proportional to 173,881.98, 260,892.09 and 80,431.74 is: 120,679.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,881.98 : 260,892.09 = 80,431.74 : x
  2. Step 2: Convert to fraction form
    173,881.98/260,892.09 = 80,431.74/x
  3. Step 3: Cross multiply
    173,881.98x = 260,892.09 × 80,431.74
  4. Step 4: Simplify right side
    173,881.98x = 20,984,004,750.94
  5. Step 5: Solve for x
    x = 20,984,004,750.94/173,881.98
  6. Step 6: Final answer
    x = 120,679.58

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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.