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Finding the Fourth Proportional to 72,956.70, 100,680.30 and 41,125.86

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Solution

The fourth proportional to 72,956.70, 100,680.30 and 41,125.86 is: 56,753.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,956.70 : 100,680.30 = 41,125.86 : x
  2. Step 2: Convert to fraction form
    72,956.70/100,680.30 = 41,125.86/x
  3. Step 3: Cross multiply
    72,956.70x = 100,680.30 × 41,125.86
  4. Step 4: Simplify right side
    72,956.70x = 4,140,563,922.56
  5. Step 5: Solve for x
    x = 4,140,563,922.56/72,956.70
  6. Step 6: Final answer
    x = 56,753.72

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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.