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Finding the Fourth Proportional to 363,138.56, 501,055.44 and 219,908.96

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Solution

The fourth proportional to 363,138.56, 501,055.44 and 219,908.96 is: 303,428.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,138.56 : 501,055.44 = 219,908.96 : x
  2. Step 2: Convert to fraction form
    363,138.56/501,055.44 = 219,908.96/x
  3. Step 3: Cross multiply
    363,138.56x = 501,055.44 × 219,908.96
  4. Step 4: Simplify right side
    363,138.56x = 110,186,580,712.74
  5. Step 5: Solve for x
    x = 110,186,580,712.74/363,138.56
  6. Step 6: Final answer
    x = 303,428.48

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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.