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Finding the Fourth Proportional to 55,989.25, 83,992.52 and 20,933.89

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Solution

The fourth proportional to 55,989.25, 83,992.52 and 20,933.89 is: 31,404.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,989.25 : 83,992.52 = 20,933.89 : x
  2. Step 2: Convert to fraction form
    55,989.25/83,992.52 = 20,933.89/x
  3. Step 3: Cross multiply
    55,989.25x = 83,992.52 × 20,933.89
  4. Step 4: Simplify right side
    55,989.25x = 1,758,290,174.50
  5. Step 5: Solve for x
    x = 1,758,290,174.50/55,989.25
  6. Step 6: Final answer
    x = 31,404.07

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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.