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Finding the Fourth Proportional to 18,795,389.70, 28,193,084.55 and 11,237,117.70

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Solution

The fourth proportional to 18,795,389.70, 28,193,084.55 and 11,237,117.70 is: 16,855,676.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,795,389.70 : 28,193,084.55 = 11,237,117.70 : x
  2. Step 2: Convert to fraction form
    18,795,389.70/28,193,084.55 = 11,237,117.70/x
  3. Step 3: Cross multiply
    18,795,389.70x = 28,193,084.55 × 11,237,117.70
  4. Step 4: Simplify right side
    18,795,389.70x = 316,809,009,414,401.50
  5. Step 5: Solve for x
    x = 316,809,009,414,401.50/18,795,389.70
  6. Step 6: Final answer
    x = 16,855,676.55

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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.