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Finding the Fourth Proportional to 50,679.90, 76,019.85 and 15,619.56

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Solution

The fourth proportional to 50,679.90, 76,019.85 and 15,619.56 is: 23,429.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,679.90 : 76,019.85 = 15,619.56 : x
  2. Step 2: Convert to fraction form
    50,679.90/76,019.85 = 15,619.56/x
  3. Step 3: Cross multiply
    50,679.90x = 76,019.85 × 15,619.56
  4. Step 4: Simplify right side
    50,679.90x = 1,187,396,608.27
  5. Step 5: Solve for x
    x = 1,187,396,608.27/50,679.90
  6. Step 6: Final answer
    x = 23,429.34

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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.