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Finding the Fourth Proportional to 37,879.56, 56,781.06 and 15,662.28

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Solution

The fourth proportional to 37,879.56, 56,781.06 and 15,662.28 is: 23,477.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,879.56 : 56,781.06 = 15,662.28 : x
  2. Step 2: Convert to fraction form
    37,879.56/56,781.06 = 15,662.28/x
  3. Step 3: Cross multiply
    37,879.56x = 56,781.06 × 15,662.28
  4. Step 4: Simplify right side
    37,879.56x = 889,320,860.42
  5. Step 5: Solve for x
    x = 889,320,860.42/37,879.56
  6. Step 6: Final answer
    x = 23,477.59

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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.