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Finding the Fourth Proportional to 235,413.45, 324,866.72 and 127,986.20

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Solution

The fourth proportional to 235,413.45, 324,866.72 and 127,986.20 is: 176,618.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,413.45 : 324,866.72 = 127,986.20 : x
  2. Step 2: Convert to fraction form
    235,413.45/324,866.72 = 127,986.20/x
  3. Step 3: Cross multiply
    235,413.45x = 324,866.72 × 127,986.20
  4. Step 4: Simplify right side
    235,413.45x = 41,578,454,735.00
  5. Step 5: Solve for x
    x = 41,578,454,735.00/235,413.45
  6. Step 6: Final answer
    x = 176,618.86

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1.5x scale

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.