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Finding the Fourth Proportional to 7,133.78, 9,844.11 and 4,149.41

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Solution

The fourth proportional to 7,133.78, 9,844.11 and 4,149.41 is: 5,725.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,133.78 : 9,844.11 = 4,149.41 : x
  2. Step 2: Convert to fraction form
    7,133.78/9,844.11 = 4,149.41/x
  3. Step 3: Cross multiply
    7,133.78x = 9,844.11 × 4,149.41
  4. Step 4: Simplify right side
    7,133.78x = 40,847,199.25
  5. Step 5: Solve for x
    x = 40,847,199.25/7,133.78
  6. Step 6: Final answer
    x = 5,725.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.