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Finding the Fourth Proportional to 2,943.90, 4,415.85 and 995.94

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Solution

The fourth proportional to 2,943.90, 4,415.85 and 995.94 is: 1,493.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,943.90 : 4,415.85 = 995.94 : x
  2. Step 2: Convert to fraction form
    2,943.90/4,415.85 = 995.94/x
  3. Step 3: Cross multiply
    2,943.90x = 4,415.85 × 995.94
  4. Step 4: Simplify right side
    2,943.90x = 4,397,921.65
  5. Step 5: Solve for x
    x = 4,397,921.65/2,943.90
  6. Step 6: Final answer
    x = 1,493.91

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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.