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Finding the Fourth Proportional to 995,883.78, 1,374,336 and 543,174.78

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Solution

The fourth proportional to 995,883.78, 1,374,336 and 543,174.78 is: 749,590.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    995,883.78 : 1,374,336 = 543,174.78 : x
  2. Step 2: Convert to fraction form
    995,883.78/1,374,336 = 543,174.78/x
  3. Step 3: Cross multiply
    995,883.78x = 1,374,336 × 543,174.78
  4. Step 4: Simplify right side
    995,883.78x = 746,504,654,446.08
  5. Step 5: Solve for x
    x = 746,504,654,446.08/995,883.78
  6. Step 6: Final answer
    x = 749,590.13

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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.