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Finding the Fourth Proportional to 6,246.99, 8,620.70 and 3,414.38

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Solution

The fourth proportional to 6,246.99, 8,620.70 and 3,414.38 is: 4,711.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,246.99 : 8,620.70 = 3,414.38 : x
  2. Step 2: Convert to fraction form
    6,246.99/8,620.70 = 3,414.38/x
  3. Step 3: Cross multiply
    6,246.99x = 8,620.70 × 3,414.38
  4. Step 4: Simplify right side
    6,246.99x = 29,434,367.22
  5. Step 5: Solve for x
    x = 29,434,367.22/6,246.99
  6. Step 6: Final answer
    x = 4,711.77

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Half scale
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Double 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.