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Finding the Fourth Proportional to 11,959.89, 17,938.44 and 3,195.50

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Solution

The fourth proportional to 11,959.89, 17,938.44 and 3,195.50 is: 4,792.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,959.89 : 17,938.44 = 3,195.50 : x
  2. Step 2: Convert to fraction form
    11,959.89/17,938.44 = 3,195.50/x
  3. Step 3: Cross multiply
    11,959.89x = 17,938.44 × 3,195.50
  4. Step 4: Simplify right side
    11,959.89x = 57,322,195.33
  5. Step 5: Solve for x
    x = 57,322,195.33/11,959.89
  6. Step 6: Final answer
    x = 4,792.87

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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.