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Finding the Fourth Proportional to 2,794.87, 4,192.50 and 847.22

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Solution

The fourth proportional to 2,794.87, 4,192.50 and 847.22 is: 1,270.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,794.87 : 4,192.50 = 847.22 : x
  2. Step 2: Convert to fraction form
    2,794.87/4,192.50 = 847.22/x
  3. Step 3: Cross multiply
    2,794.87x = 4,192.50 × 847.22
  4. Step 4: Simplify right side
    2,794.87x = 3,551,969.85
  5. Step 5: Solve for x
    x = 3,551,969.85/2,794.87
  6. Step 6: Final answer
    x = 1,270.89

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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.