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Finding the Fourth Proportional to 78,161.93, 107,862.99 and 44,181.42

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Solution

The fourth proportional to 78,161.93, 107,862.99 and 44,181.42 is: 60,970.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,161.93 : 107,862.99 = 44,181.42 : x
  2. Step 2: Convert to fraction form
    78,161.93/107,862.99 = 44,181.42/x
  3. Step 3: Cross multiply
    78,161.93x = 107,862.99 × 44,181.42
  4. Step 4: Simplify right side
    78,161.93x = 4,765,540,063.65
  5. Step 5: Solve for x
    x = 4,765,540,063.65/78,161.93
  6. Step 6: Final answer
    x = 60,970.10

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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.