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Finding the Fourth Proportional to 80,674.56, 111,342.54 and 48,410.64

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Solution

The fourth proportional to 80,674.56, 111,342.54 and 48,410.64 is: 66,813.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,674.56 : 111,342.54 = 48,410.64 : x
  2. Step 2: Convert to fraction form
    80,674.56/111,342.54 = 48,410.64/x
  3. Step 3: Cross multiply
    80,674.56x = 111,342.54 × 48,410.64
  4. Step 4: Simplify right side
    80,674.56x = 5,390,163,620.63
  5. Step 5: Solve for x
    x = 5,390,163,620.63/80,674.56
  6. Step 6: Final answer
    x = 66,813.67

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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.