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Finding the Fourth Proportional to 7,893.90, 11,840.39 and 2,963.13

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Solution

The fourth proportional to 7,893.90, 11,840.39 and 2,963.13 is: 4,444.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,893.90 : 11,840.39 = 2,963.13 : x
  2. Step 2: Convert to fraction form
    7,893.90/11,840.39 = 2,963.13/x
  3. Step 3: Cross multiply
    7,893.90x = 11,840.39 × 2,963.13
  4. Step 4: Simplify right side
    7,893.90x = 35,084,540.80
  5. Step 5: Solve for x
    x = 35,084,540.80/7,893.90
  6. Step 6: Final answer
    x = 4,444.51

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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.