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Finding the Fourth Proportional to 605,314.16, 835,413.64 and 391,077.44

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Solution

The fourth proportional to 605,314.16, 835,413.64 and 391,077.44 is: 539,738.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,314.16 : 835,413.64 = 391,077.44 : x
  2. Step 2: Convert to fraction form
    605,314.16/835,413.64 = 391,077.44/x
  3. Step 3: Cross multiply
    605,314.16x = 835,413.64 × 391,077.44
  4. Step 4: Simplify right side
    605,314.16x = 326,711,427,672.28
  5. Step 5: Solve for x
    x = 326,711,427,672.28/605,314.16
  6. Step 6: Final answer
    x = 539,738.62

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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.