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Finding the Fourth Proportional to 107,794.89, 148,758.59 and 61,861.92

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Solution

The fourth proportional to 107,794.89, 148,758.59 and 61,861.92 is: 85,370.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,794.89 : 148,758.59 = 61,861.92 : x
  2. Step 2: Convert to fraction form
    107,794.89/148,758.59 = 61,861.92/x
  3. Step 3: Cross multiply
    107,794.89x = 148,758.59 × 61,861.92
  4. Step 4: Simplify right side
    107,794.89x = 9,202,491,993.89
  5. Step 5: Solve for x
    x = 9,202,491,993.89/107,794.89
  6. Step 6: Final answer
    x = 85,370.39

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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.