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Finding the Fourth Proportional to 223,421.02, 335,128.60 and 54,942.80

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Solution

The fourth proportional to 223,421.02, 335,128.60 and 54,942.80 is: 82,413.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,421.02 : 335,128.60 = 54,942.80 : x
  2. Step 2: Convert to fraction form
    223,421.02/335,128.60 = 54,942.80/x
  3. Step 3: Cross multiply
    223,421.02x = 335,128.60 × 54,942.80
  4. Step 4: Simplify right side
    223,421.02x = 18,412,903,644.08
  5. Step 5: Solve for x
    x = 18,412,903,644.08/223,421.02
  6. Step 6: Final answer
    x = 82,413.48

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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.