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Finding the Fourth Proportional to 11,858.55, 17,793.36 and 5,284.05

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Solution

The fourth proportional to 11,858.55, 17,793.36 and 5,284.05 is: 7,928.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,858.55 : 17,793.36 = 5,284.05 : x
  2. Step 2: Convert to fraction form
    11,858.55/17,793.36 = 5,284.05/x
  3. Step 3: Cross multiply
    11,858.55x = 17,793.36 × 5,284.05
  4. Step 4: Simplify right side
    11,858.55x = 94,021,003.91
  5. Step 5: Solve for x
    x = 94,021,003.91/11,858.55
  6. Step 6: Final answer
    x = 7,928.54

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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.