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Finding the Fourth Proportional to 69,228.99, 104,060.25 and 45,687.82

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Solution

The fourth proportional to 69,228.99, 104,060.25 and 45,687.82 is: 68,674.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,228.99 : 104,060.25 = 45,687.82 : x
  2. Step 2: Convert to fraction form
    69,228.99/104,060.25 = 45,687.82/x
  3. Step 3: Cross multiply
    69,228.99x = 104,060.25 × 45,687.82
  4. Step 4: Simplify right side
    69,228.99x = 4,754,285,971.16
  5. Step 5: Solve for x
    x = 4,754,285,971.16/69,228.99
  6. Step 6: Final answer
    x = 68,674.78

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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.