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Finding the Fourth Proportional to 115,805.80, 173,659.38 and 65,909.44

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Solution

The fourth proportional to 115,805.80, 173,659.38 and 65,909.44 is: 98,836.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,805.80 : 173,659.38 = 65,909.44 : x
  2. Step 2: Convert to fraction form
    115,805.80/173,659.38 = 65,909.44/x
  3. Step 3: Cross multiply
    115,805.80x = 173,659.38 × 65,909.44
  4. Step 4: Simplify right side
    115,805.80x = 11,445,792,486.55
  5. Step 5: Solve for x
    x = 11,445,792,486.55/115,805.80
  6. Step 6: Final answer
    x = 98,836.09

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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.