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Finding the Fourth Proportional to 8,763,993.80, 13,145,990.70 and 8,763,993.80

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Solution

The fourth proportional to 8,763,993.80, 13,145,990.70 and 8,763,993.80 is: 13,145,990.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,763,993.80 : 13,145,990.70 = 8,763,993.80 : x
  2. Step 2: Convert to fraction form
    8,763,993.80/13,145,990.70 = 8,763,993.80/x
  3. Step 3: Cross multiply
    8,763,993.80x = 13,145,990.70 × 8,763,993.80
  4. Step 4: Simplify right side
    8,763,993.80x = 115,211,380,989,657.66
  5. Step 5: Solve for x
    x = 115,211,380,989,657.66/8,763,993.80
  6. Step 6: Final answer
    x = 13,145,990.70

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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.