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Finding the Fourth Proportional to 3,571.49, 5,357.17 and 974.42

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Solution

The fourth proportional to 3,571.49, 5,357.17 and 974.42 is: 1,461.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,571.49 : 5,357.17 = 974.42 : x
  2. Step 2: Convert to fraction form
    3,571.49/5,357.17 = 974.42/x
  3. Step 3: Cross multiply
    3,571.49x = 5,357.17 × 974.42
  4. Step 4: Simplify right side
    3,571.49x = 5,220,133.59
  5. Step 5: Solve for x
    x = 5,220,133.59/3,571.49
  6. Step 6: Final answer
    x = 1,461.61

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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.