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Finding the Fourth Proportional to 33,231.50, 45,858.21 and 18,327.50

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Solution

The fourth proportional to 33,231.50, 45,858.21 and 18,327.50 is: 25,291.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,231.50 : 45,858.21 = 18,327.50 : x
  2. Step 2: Convert to fraction form
    33,231.50/45,858.21 = 18,327.50/x
  3. Step 3: Cross multiply
    33,231.50x = 45,858.21 × 18,327.50
  4. Step 4: Simplify right side
    33,231.50x = 840,466,389.69
  5. Step 5: Solve for x
    x = 840,466,389.69/33,231.50
  6. Step 6: Final answer
    x = 25,291.25

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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.