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Finding the Fourth Proportional to 115,418.20, 173,150.70 and 65,522.20

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Solution

The fourth proportional to 115,418.20, 173,150.70 and 65,522.20 is: 98,296.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,418.20 : 173,150.70 = 65,522.20 : x
  2. Step 2: Convert to fraction form
    115,418.20/173,150.70 = 65,522.20/x
  3. Step 3: Cross multiply
    115,418.20x = 173,150.70 × 65,522.20
  4. Step 4: Simplify right side
    115,418.20x = 11,345,214,795.54
  5. Step 5: Solve for x
    x = 11,345,214,795.54/115,418.20
  6. Step 6: Final answer
    x = 98,296.58

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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.