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Finding the Fourth Proportional to 168,778.67, 253,223.42 and 69,022.76

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Solution

The fourth proportional to 168,778.67, 253,223.42 and 69,022.76 is: 103,556.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,778.67 : 253,223.42 = 69,022.76 : x
  2. Step 2: Convert to fraction form
    168,778.67/253,223.42 = 69,022.76/x
  3. Step 3: Cross multiply
    168,778.67x = 253,223.42 × 69,022.76
  4. Step 4: Simplify right side
    168,778.67x = 17,478,177,733.81
  5. Step 5: Solve for x
    x = 17,478,177,733.81/168,778.67
  6. Step 6: Final answer
    x = 103,556.80

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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.