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Finding the Fourth Proportional to 119,958.94, 165,597.23 and 79,147.09

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Solution

The fourth proportional to 119,958.94, 165,597.23 and 79,147.09 is: 109,258.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,958.94 : 165,597.23 = 79,147.09 : x
  2. Step 2: Convert to fraction form
    119,958.94/165,597.23 = 79,147.09/x
  3. Step 3: Cross multiply
    119,958.94x = 165,597.23 × 79,147.09
  4. Step 4: Simplify right side
    119,958.94x = 13,106,538,826.22
  5. Step 5: Solve for x
    x = 13,106,538,826.22/119,958.94
  6. Step 6: Final answer
    x = 109,258.54

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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.