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Finding the Fourth Proportional to 321,970.95, 482,956.43 and 111,608.91

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Solution

The fourth proportional to 321,970.95, 482,956.43 and 111,608.91 is: 167,413.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,970.95 : 482,956.43 = 111,608.91 : x
  2. Step 2: Convert to fraction form
    321,970.95/482,956.43 = 111,608.91/x
  3. Step 3: Cross multiply
    321,970.95x = 482,956.43 × 111,608.91
  4. Step 4: Simplify right side
    321,970.95x = 53,902,240,171.75
  5. Step 5: Solve for x
    x = 53,902,240,171.75/321,970.95
  6. Step 6: Final answer
    x = 167,413.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.