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Finding the Fourth Proportional to 3,520.99, 4,858.75 and 1,949.12

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Solution

The fourth proportional to 3,520.99, 4,858.75 and 1,949.12 is: 2,689.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.99 : 4,858.75 = 1,949.12 : x
  2. Step 2: Convert to fraction form
    3,520.99/4,858.75 = 1,949.12/x
  3. Step 3: Cross multiply
    3,520.99x = 4,858.75 × 1,949.12
  4. Step 4: Simplify right side
    3,520.99x = 9,470,286.80
  5. Step 5: Solve for x
    x = 9,470,286.80/3,520.99
  6. Step 6: Final answer
    x = 2,689.67

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Half scale
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Double scale
Find fourth proportional to 3,521.99, 4,860.13 and 1,950.12
Similar ratio
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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.