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Finding the Fourth Proportional to 103,808.93, 155,810.26 and 53,245.92

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Solution

The fourth proportional to 103,808.93, 155,810.26 and 53,245.92 is: 79,918.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,808.93 : 155,810.26 = 53,245.92 : x
  2. Step 2: Convert to fraction form
    103,808.93/155,810.26 = 53,245.92/x
  3. Step 3: Cross multiply
    103,808.93x = 155,810.26 × 53,245.92
  4. Step 4: Simplify right side
    103,808.93x = 8,296,260,819.85
  5. Step 5: Solve for x
    x = 8,296,260,819.85/103,808.93
  6. Step 6: Final answer
    x = 79,918.56

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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.