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Finding the Fourth Proportional to 372,204.30, 557,968.59 and 135,379.56

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Solution

The fourth proportional to 372,204.30, 557,968.59 and 135,379.56 is: 202,946.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,204.30 : 557,968.59 = 135,379.56 : x
  2. Step 2: Convert to fraction form
    372,204.30/557,968.59 = 135,379.56/x
  3. Step 3: Cross multiply
    372,204.30x = 557,968.59 × 135,379.56
  4. Step 4: Simplify right side
    372,204.30x = 75,537,542,208.02
  5. Step 5: Solve for x
    x = 75,537,542,208.02/372,204.30
  6. Step 6: Final answer
    x = 202,946.45

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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.