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Finding the Fourth Proportional to 622,508.20, 934,199.70 and 398,413.60

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Solution

The fourth proportional to 622,508.20, 934,199.70 and 398,413.60 is: 597,900.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,508.20 : 934,199.70 = 398,413.60 : x
  2. Step 2: Convert to fraction form
    622,508.20/934,199.70 = 398,413.60/x
  3. Step 3: Cross multiply
    622,508.20x = 934,199.70 × 398,413.60
  4. Step 4: Simplify right side
    622,508.20x = 372,197,865,595.92
  5. Step 5: Solve for x
    x = 372,197,865,595.92/622,508.20
  6. Step 6: Final answer
    x = 597,900.34

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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.