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Finding the Fourth Proportional to 18,203.94, 25,094.34 and 11,125.62

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Solution

The fourth proportional to 18,203.94, 25,094.34 and 11,125.62 is: 15,336.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,203.94 : 25,094.34 = 11,125.62 : x
  2. Step 2: Convert to fraction form
    18,203.94/25,094.34 = 11,125.62/x
  3. Step 3: Cross multiply
    18,203.94x = 25,094.34 × 11,125.62
  4. Step 4: Simplify right side
    18,203.94x = 279,190,090.99
  5. Step 5: Solve for x
    x = 279,190,090.99/18,203.94
  6. Step 6: Final answer
    x = 15,336.79

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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.