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Finding the Fourth Proportional to 35,945.22, 53,915.21 and 12,250.80

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Solution

The fourth proportional to 35,945.22, 53,915.21 and 12,250.80 is: 18,375.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,945.22 : 53,915.21 = 12,250.80 : x
  2. Step 2: Convert to fraction form
    35,945.22/53,915.21 = 12,250.80/x
  3. Step 3: Cross multiply
    35,945.22x = 53,915.21 × 12,250.80
  4. Step 4: Simplify right side
    35,945.22x = 660,504,185.09
  5. Step 5: Solve for x
    x = 660,504,185.09/35,945.22
  6. Step 6: Final answer
    x = 18,375.30

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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.