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Finding the Fourth Proportional to 517,939.11, 776,704.55 and 251,620.83

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Solution

The fourth proportional to 517,939.11, 776,704.55 and 251,620.83 is: 377,332.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,939.11 : 776,704.55 = 251,620.83 : x
  2. Step 2: Convert to fraction form
    517,939.11/776,704.55 = 251,620.83/x
  3. Step 3: Cross multiply
    517,939.11x = 776,704.55 × 251,620.83
  4. Step 4: Simplify right side
    517,939.11x = 195,435,042,277.67
  5. Step 5: Solve for x
    x = 195,435,042,277.67/517,939.11
  6. Step 6: Final answer
    x = 377,332.08

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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.