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Finding the Fourth Proportional to 91,413.92, 126,098.33 and 55,090.56

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Solution

The fourth proportional to 91,413.92, 126,098.33 and 55,090.56 is: 75,993.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,413.92 : 126,098.33 = 55,090.56 : x
  2. Step 2: Convert to fraction form
    91,413.92/126,098.33 = 55,090.56/x
  3. Step 3: Cross multiply
    91,413.92x = 126,098.33 × 55,090.56
  4. Step 4: Simplify right side
    91,413.92x = 6,946,827,339.31
  5. Step 5: Solve for x
    x = 6,946,827,339.31/91,413.92
  6. Step 6: Final answer
    x = 75,993.11

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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.