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Finding the Fourth Proportional to 67,113.74, 100,670.88 and 20,367.02

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Solution

The fourth proportional to 67,113.74, 100,670.88 and 20,367.02 is: 30,550.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,113.74 : 100,670.88 = 20,367.02 : x
  2. Step 2: Convert to fraction form
    67,113.74/100,670.88 = 20,367.02/x
  3. Step 3: Cross multiply
    67,113.74x = 100,670.88 × 20,367.02
  4. Step 4: Simplify right side
    67,113.74x = 2,050,365,826.38
  5. Step 5: Solve for x
    x = 2,050,365,826.38/67,113.74
  6. Step 6: Final answer
    x = 30,550.61

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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.