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Finding the Fourth Proportional to 69,074.34, 103,611.51 and 45,695.31

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Solution

The fourth proportional to 69,074.34, 103,611.51 and 45,695.31 is: 68,542.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,074.34 : 103,611.51 = 45,695.31 : x
  2. Step 2: Convert to fraction form
    69,074.34/103,611.51 = 45,695.31/x
  3. Step 3: Cross multiply
    69,074.34x = 103,611.51 × 45,695.31
  4. Step 4: Simplify right side
    69,074.34x = 4,734,560,069.02
  5. Step 5: Solve for x
    x = 4,734,560,069.02/69,074.34
  6. Step 6: Final answer
    x = 68,542.97

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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.