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Finding the Fourth Proportional to 572,805.78, 858,879.40 and 236,078.85

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Solution

The fourth proportional to 572,805.78, 858,879.40 and 236,078.85 is: 353,982.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,805.78 : 858,879.40 = 236,078.85 : x
  2. Step 2: Convert to fraction form
    572,805.78/858,879.40 = 236,078.85/x
  3. Step 3: Cross multiply
    572,805.78x = 858,879.40 × 236,078.85
  4. Step 4: Simplify right side
    572,805.78x = 202,763,264,113.94
  5. Step 5: Solve for x
    x = 202,763,264,113.94/572,805.78
  6. Step 6: Final answer
    x = 353,982.58

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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.