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Finding the Fourth Proportional to 863,190.60, 1,206,892.20 and 863,190.60

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Solution

The fourth proportional to 863,190.60, 1,206,892.20 and 863,190.60 is: 1,206,892.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,190.60 : 1,206,892.20 = 863,190.60 : x
  2. Step 2: Convert to fraction form
    863,190.60/1,206,892.20 = 863,190.60/x
  3. Step 3: Cross multiply
    863,190.60x = 1,206,892.20 × 863,190.60
  4. Step 4: Simplify right side
    863,190.60x = 1,041,778,002,253.32
  5. Step 5: Solve for x
    x = 1,041,778,002,253.32/863,190.60
  6. Step 6: Final answer
    x = 1,206,892.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.