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Finding the Fourth Proportional to 13,801,967.85, 20,702,951.78 and 13,801,967.85

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Solution

The fourth proportional to 13,801,967.85, 20,702,951.78 and 13,801,967.85 is: 20,702,951.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,801,967.85 : 20,702,951.78 = 13,801,967.85 : x
  2. Step 2: Convert to fraction form
    13,801,967.85/20,702,951.78 = 13,801,967.85/x
  3. Step 3: Cross multiply
    13,801,967.85x = 20,702,951.78 × 13,801,967.85
  4. Step 4: Simplify right side
    13,801,967.85x = 285,741,474,798,650.38
  5. Step 5: Solve for x
    x = 285,741,474,798,650.38/13,801,967.85
  6. Step 6: Final answer
    x = 20,702,951.78

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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.