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Finding the Fourth Proportional to 18,863,226.20, 28,294,839.30 and 18,863,226.20

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Solution

The fourth proportional to 18,863,226.20, 28,294,839.30 and 18,863,226.20 is: 28,294,839.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,863,226.20 : 28,294,839.30 = 18,863,226.20 : x
  2. Step 2: Convert to fraction form
    18,863,226.20/28,294,839.30 = 18,863,226.20/x
  3. Step 3: Cross multiply
    18,863,226.20x = 28,294,839.30 × 18,863,226.20
  4. Step 4: Simplify right side
    18,863,226.20x = 533,731,954,008,549.62
  5. Step 5: Solve for x
    x = 533,731,954,008,549.62/18,863,226.20
  6. Step 6: Final answer
    x = 28,294,839.30

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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.