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Finding the Fourth Proportional to 18,762.25, 25,892.39 and 11,310.73

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Solution

The fourth proportional to 18,762.25, 25,892.39 and 11,310.73 is: 15,609.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,762.25 : 25,892.39 = 11,310.73 : x
  2. Step 2: Convert to fraction form
    18,762.25/25,892.39 = 11,310.73/x
  3. Step 3: Cross multiply
    18,762.25x = 25,892.39 × 11,310.73
  4. Step 4: Simplify right side
    18,762.25x = 292,861,832.34
  5. Step 5: Solve for x
    x = 292,861,832.34/18,762.25
  6. Step 6: Final answer
    x = 15,609.10

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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.