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Finding the Fourth Proportional to 13,589.43, 18,754.68 and 7,926.01

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Solution

The fourth proportional to 13,589.43, 18,754.68 and 7,926.01 is: 10,938.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,589.43 : 18,754.68 = 7,926.01 : x
  2. Step 2: Convert to fraction form
    13,589.43/18,754.68 = 7,926.01/x
  3. Step 3: Cross multiply
    13,589.43x = 18,754.68 × 7,926.01
  4. Step 4: Simplify right side
    13,589.43x = 148,649,781.23
  5. Step 5: Solve for x
    x = 148,649,781.23/13,589.43
  6. Step 6: Final answer
    x = 10,938.63

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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.