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Finding the Fourth Proportional to 18,586.64, 25,614.16 and 18,245.03

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Solution

The fourth proportional to 18,586.64, 25,614.16 and 18,245.03 is: 25,143.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,586.64 : 25,614.16 = 18,245.03 : x
  2. Step 2: Convert to fraction form
    18,586.64/25,614.16 = 18,245.03/x
  3. Step 3: Cross multiply
    18,586.64x = 25,614.16 × 18,245.03
  4. Step 4: Simplify right side
    18,586.64x = 467,331,117.62
  5. Step 5: Solve for x
    x = 467,331,117.62/18,586.64
  6. Step 6: Final answer
    x = 25,143.39

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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.