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Finding the Fourth Proportional to 34,960.70, 48,246.08 and 20,620.86

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Solution

The fourth proportional to 34,960.70, 48,246.08 and 20,620.86 is: 28,456.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,960.70 : 48,246.08 = 20,620.86 : x
  2. Step 2: Convert to fraction form
    34,960.70/48,246.08 = 20,620.86/x
  3. Step 3: Cross multiply
    34,960.70x = 48,246.08 × 20,620.86
  4. Step 4: Simplify right side
    34,960.70x = 994,875,558.12
  5. Step 5: Solve for x
    x = 994,875,558.12/34,960.70
  6. Step 6: Final answer
    x = 28,456.97

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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.