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Finding the Fourth Proportional to 5,661.96, 8,493.05 and 1,964.31

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Solution

The fourth proportional to 5,661.96, 8,493.05 and 1,964.31 is: 2,946.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,661.96 : 8,493.05 = 1,964.31 : x
  2. Step 2: Convert to fraction form
    5,661.96/8,493.05 = 1,964.31/x
  3. Step 3: Cross multiply
    5,661.96x = 8,493.05 × 1,964.31
  4. Step 4: Simplify right side
    5,661.96x = 16,682,987.96
  5. Step 5: Solve for x
    x = 16,682,987.96/5,661.96
  6. Step 6: Final answer
    x = 2,946.50

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Double scale
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Similar ratio
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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.