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Finding the Fourth Proportional to 99,696.99, 137,576.98 and 59,409.85

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Solution

The fourth proportional to 99,696.99, 137,576.98 and 59,409.85 is: 81,982.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,696.99 : 137,576.98 = 59,409.85 : x
  2. Step 2: Convert to fraction form
    99,696.99/137,576.98 = 59,409.85/x
  3. Step 3: Cross multiply
    99,696.99x = 137,576.98 × 59,409.85
  4. Step 4: Simplify right side
    99,696.99x = 8,173,427,745.25
  5. Step 5: Solve for x
    x = 8,173,427,745.25/99,696.99
  6. Step 6: Final answer
    x = 81,982.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.