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Finding the Fourth Proportional to 158,494.88, 218,710.44 and 91,413.92

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Solution

The fourth proportional to 158,494.88, 218,710.44 and 91,413.92 is: 126,144.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,494.88 : 218,710.44 = 91,413.92 : x
  2. Step 2: Convert to fraction form
    158,494.88/218,710.44 = 91,413.92/x
  3. Step 3: Cross multiply
    158,494.88x = 218,710.44 × 91,413.92
  4. Step 4: Simplify right side
    158,494.88x = 19,993,178,665.32
  5. Step 5: Solve for x
    x = 19,993,178,665.32/158,494.88
  6. Step 6: Final answer
    x = 126,144.00

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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.