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Finding the Fourth Proportional to 79,662.21, 109,936.98 and 43,855.55

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Solution

The fourth proportional to 79,662.21, 109,936.98 and 43,855.55 is: 60,522.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,662.21 : 109,936.98 = 43,855.55 : x
  2. Step 2: Convert to fraction form
    79,662.21/109,936.98 = 43,855.55/x
  3. Step 3: Cross multiply
    79,662.21x = 109,936.98 × 43,855.55
  4. Step 4: Simplify right side
    79,662.21x = 4,821,346,723.24
  5. Step 5: Solve for x
    x = 4,821,346,723.24/79,662.21
  6. Step 6: Final answer
    x = 60,522.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.