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Finding the Fourth Proportional to 119,667.68, 165,169.54 and 74,379.87

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Solution

The fourth proportional to 119,667.68, 165,169.54 and 74,379.87 is: 102,661.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,667.68 : 165,169.54 = 74,379.87 : x
  2. Step 2: Convert to fraction form
    119,667.68/165,169.54 = 74,379.87/x
  3. Step 3: Cross multiply
    119,667.68x = 165,169.54 × 74,379.87
  4. Step 4: Simplify right side
    119,667.68x = 12,285,288,913.16
  5. Step 5: Solve for x
    x = 12,285,288,913.16/119,667.68
  6. Step 6: Final answer
    x = 102,661.71

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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.