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Finding the Fourth Proportional to 119,993.44, 165,590.16 and 66,281.92

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Solution

The fourth proportional to 119,993.44, 165,590.16 and 66,281.92 is: 91,468.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,993.44 : 165,590.16 = 66,281.92 : x
  2. Step 2: Convert to fraction form
    119,993.44/165,590.16 = 66,281.92/x
  3. Step 3: Cross multiply
    119,993.44x = 165,590.16 × 66,281.92
  4. Step 4: Simplify right side
    119,993.44x = 10,975,633,737.91
  5. Step 5: Solve for x
    x = 10,975,633,737.91/119,993.44
  6. Step 6: Final answer
    x = 91,468.61

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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.