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Finding the Fourth Proportional to 793,920.90, 1,192,413.18 and 680,326.22

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Solution

The fourth proportional to 793,920.90, 1,192,413.18 and 680,326.22 is: 1,021,801.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    793,920.90 : 1,192,413.18 = 680,326.22 : x
  2. Step 2: Convert to fraction form
    793,920.90/1,192,413.18 = 680,326.22/x
  3. Step 3: Cross multiply
    793,920.90x = 1,192,413.18 × 680,326.22
  4. Step 4: Simplify right side
    793,920.90x = 811,229,951,427.58
  5. Step 5: Solve for x
    x = 811,229,951,427.58/793,920.90
  6. Step 6: Final answer
    x = 1,021,801.98

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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.