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Finding the Fourth Proportional to 7,012.75, 9,674.21 and 4,179.22

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Solution

The fourth proportional to 7,012.75, 9,674.21 and 4,179.22 is: 5,765.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,012.75 : 9,674.21 = 4,179.22 : x
  2. Step 2: Convert to fraction form
    7,012.75/9,674.21 = 4,179.22/x
  3. Step 3: Cross multiply
    7,012.75x = 9,674.21 × 4,179.22
  4. Step 4: Simplify right side
    7,012.75x = 40,430,653.63
  5. Step 5: Solve for x
    x = 40,430,653.63/7,012.75
  6. Step 6: Final answer
    x = 5,765.30

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.