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Finding the Fourth Proportional to 73,054.43, 109,584.77 and 28,690.80

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Solution

The fourth proportional to 73,054.43, 109,584.77 and 28,690.80 is: 43,037.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,054.43 : 109,584.77 = 28,690.80 : x
  2. Step 2: Convert to fraction form
    73,054.43/109,584.77 = 28,690.80/x
  3. Step 3: Cross multiply
    73,054.43x = 109,584.77 × 28,690.80
  4. Step 4: Simplify right side
    73,054.43x = 3,144,074,575.66
  5. Step 5: Solve for x
    x = 3,144,074,575.66/73,054.43
  6. Step 6: Final answer
    x = 43,037.43

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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.