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Finding the Fourth Proportional to 173,872.60, 260,906.10 and 74,015.80

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Solution

The fourth proportional to 173,872.60, 260,906.10 and 74,015.80 is: 111,065.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,872.60 : 260,906.10 = 74,015.80 : x
  2. Step 2: Convert to fraction form
    173,872.60/260,906.10 = 74,015.80/x
  3. Step 3: Cross multiply
    173,872.60x = 260,906.10 × 74,015.80
  4. Step 4: Simplify right side
    173,872.60x = 19,311,173,716.38
  5. Step 5: Solve for x
    x = 19,311,173,716.38/173,872.60
  6. Step 6: Final answer
    x = 111,065.08

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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.