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Finding the Fourth Proportional to 3,969.22, 5,954.12 and 1,047.50

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Solution

The fourth proportional to 3,969.22, 5,954.12 and 1,047.50 is: 1,571.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,969.22 : 5,954.12 = 1,047.50 : x
  2. Step 2: Convert to fraction form
    3,969.22/5,954.12 = 1,047.50/x
  3. Step 3: Cross multiply
    3,969.22x = 5,954.12 × 1,047.50
  4. Step 4: Simplify right side
    3,969.22x = 6,236,940.70
  5. Step 5: Solve for x
    x = 6,236,940.70/3,969.22
  6. Step 6: Final answer
    x = 1,571.33

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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.