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Finding the Fourth Proportional to 106,396.15, 146,837.02 and 79,491.94

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Solution

The fourth proportional to 106,396.15, 146,837.02 and 79,491.94 is: 109,706.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,396.15 : 146,837.02 = 79,491.94 : x
  2. Step 2: Convert to fraction form
    106,396.15/146,837.02 = 79,491.94/x
  3. Step 3: Cross multiply
    106,396.15x = 146,837.02 × 79,491.94
  4. Step 4: Simplify right side
    106,396.15x = 11,672,359,583.62
  5. Step 5: Solve for x
    x = 11,672,359,583.62/106,396.15
  6. Step 6: Final answer
    x = 109,706.60

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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.