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Finding the Fourth Proportional to 6,693.80, 9,238.74 and 3,863.01

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Solution

The fourth proportional to 6,693.80, 9,238.74 and 3,863.01 is: 5,331.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,693.80 : 9,238.74 = 3,863.01 : x
  2. Step 2: Convert to fraction form
    6,693.80/9,238.74 = 3,863.01/x
  3. Step 3: Cross multiply
    6,693.80x = 9,238.74 × 3,863.01
  4. Step 4: Simplify right side
    6,693.80x = 35,689,345.01
  5. Step 5: Solve for x
    x = 35,689,345.01/6,693.80
  6. Step 6: Final answer
    x = 5,331.71

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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.