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Finding the Fourth Proportional to 616,791.21, 851,177.19 and 341,144.43

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Solution

The fourth proportional to 616,791.21, 851,177.19 and 341,144.43 is: 470,782.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,791.21 : 851,177.19 = 341,144.43 : x
  2. Step 2: Convert to fraction form
    616,791.21/851,177.19 = 341,144.43/x
  3. Step 3: Cross multiply
    616,791.21x = 851,177.19 × 341,144.43
  4. Step 4: Simplify right side
    616,791.21x = 290,374,353,055.67
  5. Step 5: Solve for x
    x = 290,374,353,055.67/616,791.21
  6. Step 6: Final answer
    x = 470,782.25

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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.