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Finding the Fourth Proportional to 78,758.01, 118,115.96 and 53,793.81

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Solution

The fourth proportional to 78,758.01, 118,115.96 and 53,793.81 is: 80,676.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,758.01 : 118,115.96 = 53,793.81 : x
  2. Step 2: Convert to fraction form
    78,758.01/118,115.96 = 53,793.81/x
  3. Step 3: Cross multiply
    78,758.01x = 118,115.96 × 53,793.81
  4. Step 4: Simplify right side
    78,758.01x = 6,353,907,241.24
  5. Step 5: Solve for x
    x = 6,353,907,241.24/78,758.01
  6. Step 6: Final answer
    x = 80,676.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.