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Finding the Fourth Proportional to 12,676,812.20, 19,015,218.30 and 12,676,812.20

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Solution

The fourth proportional to 12,676,812.20, 19,015,218.30 and 12,676,812.20 is: 19,015,218.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,676,812.20 : 19,015,218.30 = 12,676,812.20 : x
  2. Step 2: Convert to fraction form
    12,676,812.20/19,015,218.30 = 12,676,812.20/x
  3. Step 3: Cross multiply
    12,676,812.20x = 19,015,218.30 × 12,676,812.20
  4. Step 4: Simplify right side
    12,676,812.20x = 241,052,351,331,103.25
  5. Step 5: Solve for x
    x = 241,052,351,331,103.25/12,676,812.20
  6. Step 6: Final answer
    x = 19,015,218.30

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.