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Finding the Fourth Proportional to 18,798.61, 25,942.08 and 11,245.26

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Solution

The fourth proportional to 18,798.61, 25,942.08 and 11,245.26 is: 15,518.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,798.61 : 25,942.08 = 11,245.26 : x
  2. Step 2: Convert to fraction form
    18,798.61/25,942.08 = 11,245.26/x
  3. Step 3: Cross multiply
    18,798.61x = 25,942.08 × 11,245.26
  4. Step 4: Simplify right side
    18,798.61x = 291,725,396.44
  5. Step 5: Solve for x
    x = 291,725,396.44/18,798.61
  6. Step 6: Final answer
    x = 15,518.46

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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.