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Finding the Fourth Proportional to 78,858.92, 108,799.26 and 52,014.80

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Solution

The fourth proportional to 78,858.92, 108,799.26 and 52,014.80 is: 71,763.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,858.92 : 108,799.26 = 52,014.80 : x
  2. Step 2: Convert to fraction form
    78,858.92/108,799.26 = 52,014.80/x
  3. Step 3: Cross multiply
    78,858.92x = 108,799.26 × 52,014.80
  4. Step 4: Simplify right side
    78,858.92x = 5,659,171,749.05
  5. Step 5: Solve for x
    x = 5,659,171,749.05/78,858.92
  6. Step 6: Final answer
    x = 71,763.24

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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.