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Finding the Fourth Proportional to 115,956.60, 173,805.30 and 49,385.40

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Solution

The fourth proportional to 115,956.60, 173,805.30 and 49,385.40 is: 74,022.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,956.60 : 173,805.30 = 49,385.40 : x
  2. Step 2: Convert to fraction form
    115,956.60/173,805.30 = 49,385.40/x
  3. Step 3: Cross multiply
    115,956.60x = 173,805.30 × 49,385.40
  4. Step 4: Simplify right side
    115,956.60x = 8,583,444,262.62
  5. Step 5: Solve for x
    x = 8,583,444,262.62/115,956.60
  6. Step 6: Final answer
    x = 74,022.90

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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.