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Finding the Fourth Proportional to 119,878.44, 165,439.80 and 68,907.48

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Solution

The fourth proportional to 119,878.44, 165,439.80 and 68,907.48 is: 95,096.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,878.44 : 165,439.80 = 68,907.48 : x
  2. Step 2: Convert to fraction form
    119,878.44/165,439.80 = 68,907.48/x
  3. Step 3: Cross multiply
    119,878.44x = 165,439.80 × 68,907.48
  4. Step 4: Simplify right side
    119,878.44x = 11,400,039,709.70
  5. Step 5: Solve for x
    x = 11,400,039,709.70/119,878.44
  6. Step 6: Final answer
    x = 95,096.66

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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.