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Finding the Fourth Proportional to 18,809.37, 25,956.90 and 11,256.03

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Solution

The fourth proportional to 18,809.37, 25,956.90 and 11,256.03 is: 15,533.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,809.37 : 25,956.90 = 11,256.03 : x
  2. Step 2: Convert to fraction form
    18,809.37/25,956.90 = 11,256.03/x
  3. Step 3: Cross multiply
    18,809.37x = 25,956.90 × 11,256.03
  4. Step 4: Simplify right side
    18,809.37x = 292,171,645.11
  5. Step 5: Solve for x
    x = 292,171,645.11/18,809.37
  6. Step 6: Final answer
    x = 15,533.30

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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.