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Finding the Fourth Proportional to 515,171.98, 772,212.56 and 173,289.94

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Solution

The fourth proportional to 515,171.98, 772,212.56 and 173,289.94 is: 259,751.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,171.98 : 772,212.56 = 173,289.94 : x
  2. Step 2: Convert to fraction form
    515,171.98/772,212.56 = 173,289.94/x
  3. Step 3: Cross multiply
    515,171.98x = 772,212.56 × 173,289.94
  4. Step 4: Simplify right side
    515,171.98x = 133,816,664,761.81
  5. Step 5: Solve for x
    x = 133,816,664,761.81/515,171.98
  6. Step 6: Final answer
    x = 259,751.44

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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.