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Finding the Fourth Proportional to 5,647.80, 7,795.26 and 3,759.45

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Solution

The fourth proportional to 5,647.80, 7,795.26 and 3,759.45 is: 5,188.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,647.80 : 7,795.26 = 3,759.45 : x
  2. Step 2: Convert to fraction form
    5,647.80/7,795.26 = 3,759.45/x
  3. Step 3: Cross multiply
    5,647.80x = 7,795.26 × 3,759.45
  4. Step 4: Simplify right side
    5,647.80x = 29,305,890.21
  5. Step 5: Solve for x
    x = 29,305,890.21/5,647.80
  6. Step 6: Final answer
    x = 5,188.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.