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Finding the Fourth Proportional to 3,571.44, 5,356.80 and 974.34

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Solution

The fourth proportional to 3,571.44, 5,356.80 and 974.34 is: 1,461.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,571.44 : 5,356.80 = 974.34 : x
  2. Step 2: Convert to fraction form
    3,571.44/5,356.80 = 974.34/x
  3. Step 3: Cross multiply
    3,571.44x = 5,356.80 × 974.34
  4. Step 4: Simplify right side
    3,571.44x = 5,219,344.51
  5. Step 5: Solve for x
    x = 5,219,344.51/3,571.44
  6. Step 6: Final answer
    x = 1,461.41

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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.