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Finding the Fourth Proportional to 612,685.11, 845,497.94 and 344,413.11

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Solution

The fourth proportional to 612,685.11, 845,497.94 and 344,413.11 is: 475,285.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,685.11 : 845,497.94 = 344,413.11 : x
  2. Step 2: Convert to fraction form
    612,685.11/845,497.94 = 344,413.11/x
  3. Step 3: Cross multiply
    612,685.11x = 845,497.94 × 344,413.11
  4. Step 4: Simplify right side
    612,685.11x = 291,200,573,291.93
  5. Step 5: Solve for x
    x = 291,200,573,291.93/612,685.11
  6. Step 6: Final answer
    x = 475,285.87

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1.5x scale

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.