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Finding the Fourth Proportional to 18,836.75, 28,253.75 and 7,592.83

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Solution

The fourth proportional to 18,836.75, 28,253.75 and 7,592.83 is: 11,388.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,836.75 : 28,253.75 = 7,592.83 : x
  2. Step 2: Convert to fraction form
    18,836.75/28,253.75 = 7,592.83/x
  3. Step 3: Cross multiply
    18,836.75x = 28,253.75 × 7,592.83
  4. Step 4: Simplify right side
    18,836.75x = 214,525,812.01
  5. Step 5: Solve for x
    x = 214,525,812.01/18,836.75
  6. Step 6: Final answer
    x = 11,388.69

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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.