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Finding the Fourth Proportional to 3,611.66, 4,984.13 and 2,039.78

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Solution

The fourth proportional to 3,611.66, 4,984.13 and 2,039.78 is: 2,814.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611.66 : 4,984.13 = 2,039.78 : x
  2. Step 2: Convert to fraction form
    3,611.66/4,984.13 = 2,039.78/x
  3. Step 3: Cross multiply
    3,611.66x = 4,984.13 × 2,039.78
  4. Step 4: Simplify right side
    3,611.66x = 10,166,546.25
  5. Step 5: Solve for x
    x = 10,166,546.25/3,611.66
  6. Step 6: Final answer
    x = 2,814.93

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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.