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Finding the Fourth Proportional to 251,862.80, 377,863.19 and 74,369.66

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Solution

The fourth proportional to 251,862.80, 377,863.19 and 74,369.66 is: 111,574.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,862.80 : 377,863.19 = 74,369.66 : x
  2. Step 2: Convert to fraction form
    251,862.80/377,863.19 = 74,369.66/x
  3. Step 3: Cross multiply
    251,862.80x = 377,863.19 × 74,369.66
  4. Step 4: Simplify right side
    251,862.80x = 28,101,556,594.97
  5. Step 5: Solve for x
    x = 28,101,556,594.97/251,862.80
  6. Step 6: Final answer
    x = 111,574.86

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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.