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Finding the Fourth Proportional to 6,695.79, 9,240.07 and 3,711.61

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Solution

The fourth proportional to 6,695.79, 9,240.07 and 3,711.61 is: 5,121.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,695.79 : 9,240.07 = 3,711.61 : x
  2. Step 2: Convert to fraction form
    6,695.79/9,240.07 = 3,711.61/x
  3. Step 3: Cross multiply
    6,695.79x = 9,240.07 × 3,711.61
  4. Step 4: Simplify right side
    6,695.79x = 34,295,536.21
  5. Step 5: Solve for x
    x = 34,295,536.21/6,695.79
  6. Step 6: Final answer
    x = 5,121.96

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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.