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Finding the Fourth Proportional to 115,604.90, 173,418.90 and 31,366.40

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Solution

The fourth proportional to 115,604.90, 173,418.90 and 31,366.40 is: 47,052.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,604.90 : 173,418.90 = 31,366.40 : x
  2. Step 2: Convert to fraction form
    115,604.90/173,418.90 = 31,366.40/x
  3. Step 3: Cross multiply
    115,604.90x = 173,418.90 × 31,366.40
  4. Step 4: Simplify right side
    115,604.90x = 5,439,526,584.96
  5. Step 5: Solve for x
    x = 5,439,526,584.96/115,604.90
  6. Step 6: Final answer
    x = 47,052.73

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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.