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Finding the Fourth Proportional to 139,245.72, 208,902.60 and 44,475.93

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Solution

The fourth proportional to 139,245.72, 208,902.60 and 44,475.93 is: 66,724.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,245.72 : 208,902.60 = 44,475.93 : x
  2. Step 2: Convert to fraction form
    139,245.72/208,902.60 = 44,475.93/x
  3. Step 3: Cross multiply
    139,245.72x = 208,902.60 × 44,475.93
  4. Step 4: Simplify right side
    139,245.72x = 9,291,137,414.42
  5. Step 5: Solve for x
    x = 9,291,137,414.42/139,245.72
  6. Step 6: Final answer
    x = 66,724.76

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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.