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Finding the Fourth Proportional to 18,956.56, 28,435.02 and 7,267

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Solution

The fourth proportional to 18,956.56, 28,435.02 and 7,267 is: 10,900.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,956.56 : 28,435.02 = 7,267 : x
  2. Step 2: Convert to fraction form
    18,956.56/28,435.02 = 7,267/x
  3. Step 3: Cross multiply
    18,956.56x = 28,435.02 × 7,267
  4. Step 4: Simplify right side
    18,956.56x = 206,637,290.34
  5. Step 5: Solve for x
    x = 206,637,290.34/18,956.56
  6. Step 6: Final answer
    x = 10,900.57

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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.