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Finding the Fourth Proportional to 50,745.98, 76,059.28 and 20,741.70

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Solution

The fourth proportional to 50,745.98, 76,059.28 and 20,741.70 is: 31,088.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,745.98 : 76,059.28 = 20,741.70 : x
  2. Step 2: Convert to fraction form
    50,745.98/76,059.28 = 20,741.70/x
  3. Step 3: Cross multiply
    50,745.98x = 76,059.28 × 20,741.70
  4. Step 4: Simplify right side
    50,745.98x = 1,577,599,020.79
  5. Step 5: Solve for x
    x = 1,577,599,020.79/50,745.98
  6. Step 6: Final answer
    x = 31,088.16

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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.