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Finding the Fourth Proportional to 171,313.78, 236,413.56 and 92,731.72

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Solution

The fourth proportional to 171,313.78, 236,413.56 and 92,731.72 is: 127,970.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,313.78 : 236,413.56 = 92,731.72 : x
  2. Step 2: Convert to fraction form
    171,313.78/236,413.56 = 92,731.72/x
  3. Step 3: Cross multiply
    171,313.78x = 236,413.56 × 92,731.72
  4. Step 4: Simplify right side
    171,313.78x = 21,923,036,050.12
  5. Step 5: Solve for x
    x = 21,923,036,050.12/171,313.78
  6. Step 6: Final answer
    x = 127,970.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.