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Finding the Fourth Proportional to 889,469.20, 1,247,745.20 and 889,469.20

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Solution

The fourth proportional to 889,469.20, 1,247,745.20 and 889,469.20 is: 1,247,745.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,469.20 : 1,247,745.20 = 889,469.20 : x
  2. Step 2: Convert to fraction form
    889,469.20/1,247,745.20 = 889,469.20/x
  3. Step 3: Cross multiply
    889,469.20x = 1,247,745.20 × 889,469.20
  4. Step 4: Simplify right side
    889,469.20x = 1,109,830,924,847.84
  5. Step 5: Solve for x
    x = 1,109,830,924,847.84/889,469.20
  6. Step 6: Final answer
    x = 1,247,745.20

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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.