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Finding the Fourth Proportional to 99,712.44, 149,443.94 and 49,806.47

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Solution

The fourth proportional to 99,712.44, 149,443.94 and 49,806.47 is: 74,647.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,712.44 : 149,443.94 = 49,806.47 : x
  2. Step 2: Convert to fraction form
    99,712.44/149,443.94 = 49,806.47/x
  3. Step 3: Cross multiply
    99,712.44x = 149,443.94 × 49,806.47
  4. Step 4: Simplify right side
    99,712.44x = 7,443,275,238.87
  5. Step 5: Solve for x
    x = 7,443,275,238.87/99,712.44
  6. Step 6: Final answer
    x = 74,647.41

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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.