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Finding the Fourth Proportional to 18,203.10, 25,119.20 and 10,244.86

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Solution

The fourth proportional to 18,203.10, 25,119.20 and 10,244.86 is: 14,137.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,203.10 : 25,119.20 = 10,244.86 : x
  2. Step 2: Convert to fraction form
    18,203.10/25,119.20 = 10,244.86/x
  3. Step 3: Cross multiply
    18,203.10x = 25,119.20 × 10,244.86
  4. Step 4: Simplify right side
    18,203.10x = 257,342,687.31
  5. Step 5: Solve for x
    x = 257,342,687.31/18,203.10
  6. Step 6: Final answer
    x = 14,137.30

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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.