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Finding the Fourth Proportional to 6,695.70, 9,239.21 and 3,711.51

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Solution

The fourth proportional to 6,695.70, 9,239.21 and 3,711.51 is: 5,121.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,695.70 : 9,239.21 = 3,711.51 : x
  2. Step 2: Convert to fraction form
    6,695.70/9,239.21 = 3,711.51/x
  3. Step 3: Cross multiply
    6,695.70x = 9,239.21 × 3,711.51
  4. Step 4: Simplify right side
    6,695.70x = 34,291,401.75
  5. Step 5: Solve for x
    x = 34,291,401.75/6,695.70
  6. Step 6: Final answer
    x = 5,121.41

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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.