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Finding the Fourth Proportional to 3,571.12, 5,356.68 and 974.44

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Solution

The fourth proportional to 3,571.12, 5,356.68 and 974.44 is: 1,461.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,571.12 : 5,356.68 = 974.44 : x
  2. Step 2: Convert to fraction form
    3,571.12/5,356.68 = 974.44/x
  3. Step 3: Cross multiply
    3,571.12x = 5,356.68 × 974.44
  4. Step 4: Simplify right side
    3,571.12x = 5,219,763.26
  5. Step 5: Solve for x
    x = 5,219,763.26/3,571.12
  6. Step 6: Final answer
    x = 1,461.66

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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.