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Finding the Fourth Proportional to 167,916.80, 251,816.40 and 49,556.80

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Solution

The fourth proportional to 167,916.80, 251,816.40 and 49,556.80 is: 74,317.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,916.80 : 251,816.40 = 49,556.80 : x
  2. Step 2: Convert to fraction form
    167,916.80/251,816.40 = 49,556.80/x
  3. Step 3: Cross multiply
    167,916.80x = 251,816.40 × 49,556.80
  4. Step 4: Simplify right side
    167,916.80x = 12,479,214,971.52
  5. Step 5: Solve for x
    x = 12,479,214,971.52/167,916.80
  6. Step 6: Final answer
    x = 74,317.85

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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.