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Finding the Fourth Proportional to 4,712.62, 7,068.03 and 1,791.22

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Solution

The fourth proportional to 4,712.62, 7,068.03 and 1,791.22 is: 2,686.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,712.62 : 7,068.03 = 1,791.22 : x
  2. Step 2: Convert to fraction form
    4,712.62/7,068.03 = 1,791.22/x
  3. Step 3: Cross multiply
    4,712.62x = 7,068.03 × 1,791.22
  4. Step 4: Simplify right side
    4,712.62x = 12,660,396.70
  5. Step 5: Solve for x
    x = 12,660,396.70/4,712.62
  6. Step 6: Final answer
    x = 2,686.49

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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.