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Finding the Fourth Proportional to 2,704.60, 4,056.63 and 756.82

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Solution

The fourth proportional to 2,704.60, 4,056.63 and 756.82 is: 1,135.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,704.60 : 4,056.63 = 756.82 : x
  2. Step 2: Convert to fraction form
    2,704.60/4,056.63 = 756.82/x
  3. Step 3: Cross multiply
    2,704.60x = 4,056.63 × 756.82
  4. Step 4: Simplify right side
    2,704.60x = 3,070,138.72
  5. Step 5: Solve for x
    x = 3,070,138.72/2,704.60
  6. Step 6: Final answer
    x = 1,135.15

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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.