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Finding the Fourth Proportional to 3,571.07, 5,356.30 and 1,231.07

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Solution

The fourth proportional to 3,571.07, 5,356.30 and 1,231.07 is: 1,846.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,571.07 : 5,356.30 = 1,231.07 : x
  2. Step 2: Convert to fraction form
    3,571.07/5,356.30 = 1,231.07/x
  3. Step 3: Cross multiply
    3,571.07x = 5,356.30 × 1,231.07
  4. Step 4: Simplify right side
    3,571.07x = 6,593,980.24
  5. Step 5: Solve for x
    x = 6,593,980.24/3,571.07
  6. Step 6: Final answer
    x = 1,846.50

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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.