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Finding the Fourth Proportional to 405,790.88, 560,003.28 and 222,040.48

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Solution

The fourth proportional to 405,790.88, 560,003.28 and 222,040.48 is: 306,422.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,790.88 : 560,003.28 = 222,040.48 : x
  2. Step 2: Convert to fraction form
    405,790.88/560,003.28 = 222,040.48/x
  3. Step 3: Cross multiply
    405,790.88x = 560,003.28 × 222,040.48
  4. Step 4: Simplify right side
    405,790.88x = 124,343,397,092.77
  5. Step 5: Solve for x
    x = 124,343,397,092.77/405,790.88
  6. Step 6: Final answer
    x = 306,422.36

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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.