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Finding the Fourth Proportional to 18,907.33, 28,358.83 and 5,057.41

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Solution

The fourth proportional to 18,907.33, 28,358.83 and 5,057.41 is: 7,585.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,907.33 : 28,358.83 = 5,057.41 : x
  2. Step 2: Convert to fraction form
    18,907.33/28,358.83 = 5,057.41/x
  3. Step 3: Cross multiply
    18,907.33x = 28,358.83 × 5,057.41
  4. Step 4: Simplify right side
    18,907.33x = 143,422,230.43
  5. Step 5: Solve for x
    x = 143,422,230.43/18,907.33
  6. Step 6: Final answer
    x = 7,585.54

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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.