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Finding the Fourth Proportional to 69,458.85, 104,240.99 and 45,758.32

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Solution

The fourth proportional to 69,458.85, 104,240.99 and 45,758.32 is: 68,672.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,458.85 : 104,240.99 = 45,758.32 : x
  2. Step 2: Convert to fraction form
    69,458.85/104,240.99 = 45,758.32/x
  3. Step 3: Cross multiply
    69,458.85x = 104,240.99 × 45,758.32
  4. Step 4: Simplify right side
    69,458.85x = 4,769,892,431.33
  5. Step 5: Solve for x
    x = 4,769,892,431.33/69,458.85
  6. Step 6: Final answer
    x = 68,672.21

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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.