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Finding the Fourth Proportional to 18,481.68, 25,507.32 and 11,765.16

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Solution

The fourth proportional to 18,481.68, 25,507.32 and 11,765.16 is: 16,237.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,481.68 : 25,507.32 = 11,765.16 : x
  2. Step 2: Convert to fraction form
    18,481.68/25,507.32 = 11,765.16/x
  3. Step 3: Cross multiply
    18,481.68x = 25,507.32 × 11,765.16
  4. Step 4: Simplify right side
    18,481.68x = 300,097,700.97
  5. Step 5: Solve for x
    x = 300,097,700.97/18,481.68
  6. Step 6: Final answer
    x = 16,237.58

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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.