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Finding the Fourth Proportional to 50,576.91, 69,796.13 and 28,220.91

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Solution

The fourth proportional to 50,576.91, 69,796.13 and 28,220.91 is: 38,944.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,576.91 : 69,796.13 = 28,220.91 : x
  2. Step 2: Convert to fraction form
    50,576.91/69,796.13 = 28,220.91/x
  3. Step 3: Cross multiply
    50,576.91x = 69,796.13 × 28,220.91
  4. Step 4: Simplify right side
    50,576.91x = 1,969,710,111.90
  5. Step 5: Solve for x
    x = 1,969,710,111.90/50,576.91
  6. Step 6: Final answer
    x = 38,944.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.