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Finding the Fourth Proportional to 75,396.40, 113,022.60 and 27,998.80

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Solution

The fourth proportional to 75,396.40, 113,022.60 and 27,998.80 is: 41,971.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,396.40 : 113,022.60 = 27,998.80 : x
  2. Step 2: Convert to fraction form
    75,396.40/113,022.60 = 27,998.80/x
  3. Step 3: Cross multiply
    75,396.40x = 113,022.60 × 27,998.80
  4. Step 4: Simplify right side
    75,396.40x = 3,164,497,172.88
  5. Step 5: Solve for x
    x = 3,164,497,172.88/75,396.40
  6. Step 6: Final answer
    x = 41,971.46

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1.5x scale

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.