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Finding the Fourth Proportional to 5,581.36, 8,336.67 and 5,261.48

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Solution

The fourth proportional to 5,581.36, 8,336.67 and 5,261.48 is: 7,858.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,581.36 : 8,336.67 = 5,261.48 : x
  2. Step 2: Convert to fraction form
    5,581.36/8,336.67 = 5,261.48/x
  3. Step 3: Cross multiply
    5,581.36x = 8,336.67 × 5,261.48
  4. Step 4: Simplify right side
    5,581.36x = 43,863,222.47
  5. Step 5: Solve for x
    x = 43,863,222.47/5,581.36
  6. Step 6: Final answer
    x = 7,858.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.