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Finding the Fourth Proportional to 3,581.63, 5,372.76 and 984.57

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Solution

The fourth proportional to 3,581.63, 5,372.76 and 984.57 is: 1,476.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,581.63 : 5,372.76 = 984.57 : x
  2. Step 2: Convert to fraction form
    3,581.63/5,372.76 = 984.57/x
  3. Step 3: Cross multiply
    3,581.63x = 5,372.76 × 984.57
  4. Step 4: Simplify right side
    3,581.63x = 5,289,858.31
  5. Step 5: Solve for x
    x = 5,289,858.31/3,581.63
  6. Step 6: Final answer
    x = 1,476.94

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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.