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Finding the Fourth Proportional to 372,109.67, 557,460.21 and 219,851.42

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Solution

The fourth proportional to 372,109.67, 557,460.21 and 219,851.42 is: 329,361.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,109.67 : 557,460.21 = 219,851.42 : x
  2. Step 2: Convert to fraction form
    372,109.67/557,460.21 = 219,851.42/x
  3. Step 3: Cross multiply
    372,109.67x = 557,460.21 × 219,851.42
  4. Step 4: Simplify right side
    372,109.67x = 122,558,416,489.97
  5. Step 5: Solve for x
    x = 122,558,416,489.97/372,109.67
  6. Step 6: Final answer
    x = 329,361.01

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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.