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Finding the Fourth Proportional to 115,418.80, 173,128.20 and 95,735.80

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Solution

The fourth proportional to 115,418.80, 173,128.20 and 95,735.80 is: 143,603.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,418.80 : 173,128.20 = 95,735.80 : x
  2. Step 2: Convert to fraction form
    115,418.80/173,128.20 = 95,735.80/x
  3. Step 3: Cross multiply
    115,418.80x = 173,128.20 × 95,735.80
  4. Step 4: Simplify right side
    115,418.80x = 16,574,566,729.56
  5. Step 5: Solve for x
    x = 16,574,566,729.56/115,418.80
  6. Step 6: Final answer
    x = 143,603.70

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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.