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Finding the Fourth Proportional to 6,797.85, 9,380.37 and 3,813

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Solution

The fourth proportional to 6,797.85, 9,380.37 and 3,813 is: 5,261.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,797.85 : 9,380.37 = 3,813 : x
  2. Step 2: Convert to fraction form
    6,797.85/9,380.37 = 3,813/x
  3. Step 3: Cross multiply
    6,797.85x = 9,380.37 × 3,813
  4. Step 4: Simplify right side
    6,797.85x = 35,767,350.81
  5. Step 5: Solve for x
    x = 35,767,350.81/6,797.85
  6. Step 6: Final answer
    x = 5,261.57

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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.