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Finding the Fourth Proportional to 69,803.01, 104,664.78 and 47,643.23

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Solution

The fourth proportional to 69,803.01, 104,664.78 and 47,643.23 is: 71,437.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,803.01 : 104,664.78 = 47,643.23 : x
  2. Step 2: Convert to fraction form
    69,803.01/104,664.78 = 47,643.23/x
  3. Step 3: Cross multiply
    69,803.01x = 104,664.78 × 47,643.23
  4. Step 4: Simplify right side
    69,803.01x = 4,986,568,186.44
  5. Step 5: Solve for x
    x = 4,986,568,186.44/69,803.01
  6. Step 6: Final answer
    x = 71,437.72

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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.