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Finding the Fourth Proportional to 7,080.62, 10,621.28 and 2,698.41

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Solution

The fourth proportional to 7,080.62, 10,621.28 and 2,698.41 is: 4,047.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,080.62 : 10,621.28 = 2,698.41 : x
  2. Step 2: Convert to fraction form
    7,080.62/10,621.28 = 2,698.41/x
  3. Step 3: Cross multiply
    7,080.62x = 10,621.28 × 2,698.41
  4. Step 4: Simplify right side
    7,080.62x = 28,660,599.56
  5. Step 5: Solve for x
    x = 28,660,599.56/7,080.62
  6. Step 6: Final answer
    x = 4,047.76

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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.