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Finding the Fourth Proportional to 115,986.60, 173,850.30 and 49,415.40

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Solution

The fourth proportional to 115,986.60, 173,850.30 and 49,415.40 is: 74,067.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,986.60 : 173,850.30 = 49,415.40 : x
  2. Step 2: Convert to fraction form
    115,986.60/173,850.30 = 49,415.40/x
  3. Step 3: Cross multiply
    115,986.60x = 173,850.30 × 49,415.40
  4. Step 4: Simplify right side
    115,986.60x = 8,590,882,114.62
  5. Step 5: Solve for x
    x = 8,590,882,114.62/115,986.60
  6. Step 6: Final answer
    x = 74,067.88

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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.