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Finding the Fourth Proportional to 7,074.60, 10,608.75 and 2,143.05

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Solution

The fourth proportional to 7,074.60, 10,608.75 and 2,143.05 is: 3,213.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,074.60 : 10,608.75 = 2,143.05 : x
  2. Step 2: Convert to fraction form
    7,074.60/10,608.75 = 2,143.05/x
  3. Step 3: Cross multiply
    7,074.60x = 10,608.75 × 2,143.05
  4. Step 4: Simplify right side
    7,074.60x = 22,735,081.69
  5. Step 5: Solve for x
    x = 22,735,081.69/7,074.60
  6. Step 6: Final answer
    x = 3,213.62

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.