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Finding the Fourth Proportional to 2,094.75, 3,140.05 and 860.44

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Solution

The fourth proportional to 2,094.75, 3,140.05 and 860.44 is: 1,289.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,094.75 : 3,140.05 = 860.44 : x
  2. Step 2: Convert to fraction form
    2,094.75/3,140.05 = 860.44/x
  3. Step 3: Cross multiply
    2,094.75x = 3,140.05 × 860.44
  4. Step 4: Simplify right side
    2,094.75x = 2,701,824.62
  5. Step 5: Solve for x
    x = 2,701,824.62/2,094.75
  6. Step 6: Final answer
    x = 1,289.81

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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.