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Finding the Fourth Proportional to 4,990.44, 7,487.60 and 2,068

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Solution

The fourth proportional to 4,990.44, 7,487.60 and 2,068 is: 3,102.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.44 : 7,487.60 = 2,068 : x
  2. Step 2: Convert to fraction form
    4,990.44/7,487.60 = 2,068/x
  3. Step 3: Cross multiply
    4,990.44x = 7,487.60 × 2,068
  4. Step 4: Simplify right side
    4,990.44x = 15,484,356.80
  5. Step 5: Solve for x
    x = 15,484,356.80/4,990.44
  6. Step 6: Final answer
    x = 3,102.80

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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.