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Finding the Fourth Proportional to 8,778,231.30, 12,297,921.90 and 8,778,231.30

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Solution

The fourth proportional to 8,778,231.30, 12,297,921.90 and 8,778,231.30 is: 12,297,921.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,778,231.30 : 12,297,921.90 = 8,778,231.30 : x
  2. Step 2: Convert to fraction form
    8,778,231.30/12,297,921.90 = 8,778,231.30/x
  3. Step 3: Cross multiply
    8,778,231.30x = 12,297,921.90 × 8,778,231.30
  4. Step 4: Simplify right side
    8,778,231.30x = 107,954,002,947,535.48
  5. Step 5: Solve for x
    x = 107,954,002,947,535.48/8,778,231.30
  6. Step 6: Final answer
    x = 12,297,921.90

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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.