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Finding the Fourth Proportional to 4,647.87, 6,970.78 and 1,361.22

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Solution

The fourth proportional to 4,647.87, 6,970.78 and 1,361.22 is: 2,041.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,647.87 : 6,970.78 = 1,361.22 : x
  2. Step 2: Convert to fraction form
    4,647.87/6,970.78 = 1,361.22/x
  3. Step 3: Cross multiply
    4,647.87x = 6,970.78 × 1,361.22
  4. Step 4: Simplify right side
    4,647.87x = 9,488,766.85
  5. Step 5: Solve for x
    x = 9,488,766.85/4,647.87
  6. Step 6: Final answer
    x = 2,041.53

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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.