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Finding the Fourth Proportional to 18,596.76, 27,858.08 and 13,609.64

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Solution

The fourth proportional to 18,596.76, 27,858.08 and 13,609.64 is: 20,387.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,596.76 : 27,858.08 = 13,609.64 : x
  2. Step 2: Convert to fraction form
    18,596.76/27,858.08 = 13,609.64/x
  3. Step 3: Cross multiply
    18,596.76x = 27,858.08 × 13,609.64
  4. Step 4: Simplify right side
    18,596.76x = 379,138,439.89
  5. Step 5: Solve for x
    x = 379,138,439.89/18,596.76
  6. Step 6: Final answer
    x = 20,387.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.