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Finding the Fourth Proportional to 8,809,105.20, 12,361,090.80 and 8,809,105.20

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Solution

The fourth proportional to 8,809,105.20, 12,361,090.80 and 8,809,105.20 is: 12,361,090.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,809,105.20 : 12,361,090.80 = 8,809,105.20 : x
  2. Step 2: Convert to fraction form
    8,809,105.20/12,361,090.80 = 8,809,105.20/x
  3. Step 3: Cross multiply
    8,809,105.20x = 12,361,090.80 × 8,809,105.20
  4. Step 4: Simplify right side
    8,809,105.20x = 108,890,149,243,952.16
  5. Step 5: Solve for x
    x = 108,890,149,243,952.16/8,809,105.20
  6. Step 6: Final answer
    x = 12,361,090.80

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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.