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Finding the Fourth Proportional to 124,400.71, 171,672.92 and 73,413.54

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Solution

The fourth proportional to 124,400.71, 171,672.92 and 73,413.54 is: 101,310.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,400.71 : 171,672.92 = 73,413.54 : x
  2. Step 2: Convert to fraction form
    124,400.71/171,672.92 = 73,413.54/x
  3. Step 3: Cross multiply
    124,400.71x = 171,672.92 × 73,413.54
  4. Step 4: Simplify right side
    124,400.71x = 12,603,116,687.57
  5. Step 5: Solve for x
    x = 12,603,116,687.57/124,400.71
  6. Step 6: Final answer
    x = 101,310.65

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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.