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Finding the Fourth Proportional to 10,494.99, 15,745.19 and 3,921.23

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Solution

The fourth proportional to 10,494.99, 15,745.19 and 3,921.23 is: 5,882.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,494.99 : 15,745.19 = 3,921.23 : x
  2. Step 2: Convert to fraction form
    10,494.99/15,745.19 = 3,921.23/x
  3. Step 3: Cross multiply
    10,494.99x = 15,745.19 × 3,921.23
  4. Step 4: Simplify right side
    10,494.99x = 61,740,511.38
  5. Step 5: Solve for x
    x = 61,740,511.38/10,494.99
  6. Step 6: Final answer
    x = 5,882.86

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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.