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Finding the Fourth Proportional to 373,399.44, 515,140.68 and 216,131.92

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Solution

The fourth proportional to 373,399.44, 515,140.68 and 216,131.92 is: 298,174.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,399.44 : 515,140.68 = 216,131.92 : x
  2. Step 2: Convert to fraction form
    373,399.44/515,140.68 = 216,131.92/x
  3. Step 3: Cross multiply
    373,399.44x = 515,140.68 × 216,131.92
  4. Step 4: Simplify right side
    373,399.44x = 111,338,344,238.51
  5. Step 5: Solve for x
    x = 111,338,344,238.51/373,399.44
  6. Step 6: Final answer
    x = 298,174.91

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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.