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Finding the Fourth Proportional to 69,889.16, 104,746.23 and 55,039.43

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Solution

The fourth proportional to 69,889.16, 104,746.23 and 55,039.43 is: 82,490.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,889.16 : 104,746.23 = 55,039.43 : x
  2. Step 2: Convert to fraction form
    69,889.16/104,746.23 = 55,039.43/x
  3. Step 3: Cross multiply
    69,889.16x = 104,746.23 × 55,039.43
  4. Step 4: Simplify right side
    69,889.16x = 5,765,172,793.85
  5. Step 5: Solve for x
    x = 5,765,172,793.85/69,889.16
  6. Step 6: Final answer
    x = 82,490.23

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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.