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Finding the Fourth Proportional to 6,855.36, 9,460.39 and 3,711.55

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Solution

The fourth proportional to 6,855.36, 9,460.39 and 3,711.55 is: 5,121.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,855.36 : 9,460.39 = 3,711.55 : x
  2. Step 2: Convert to fraction form
    6,855.36/9,460.39 = 3,711.55/x
  3. Step 3: Cross multiply
    6,855.36x = 9,460.39 × 3,711.55
  4. Step 4: Simplify right side
    6,855.36x = 35,112,710.50
  5. Step 5: Solve for x
    x = 35,112,710.50/6,855.36
  6. Step 6: Final answer
    x = 5,121.94

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Half scale
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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.