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Finding the Fourth Proportional to 4,611.40, 6,917.10 and 4,384.60

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Solution

The fourth proportional to 4,611.40, 6,917.10 and 4,384.60 is: 6,576.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,611.40 : 6,917.10 = 4,384.60 : x
  2. Step 2: Convert to fraction form
    4,611.40/6,917.10 = 4,384.60/x
  3. Step 3: Cross multiply
    4,611.40x = 6,917.10 × 4,384.60
  4. Step 4: Simplify right side
    4,611.40x = 30,328,716.66
  5. Step 5: Solve for x
    x = 30,328,716.66/4,611.40
  6. Step 6: Final answer
    x = 6,576.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.