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Finding the Fourth Proportional to 43,691,981.90, 65,537,972.85 and 43,691,981.90

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Solution

The fourth proportional to 43,691,981.90, 65,537,972.85 and 43,691,981.90 is: 65,537,972.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,691,981.90 : 65,537,972.85 = 43,691,981.90 : x
  2. Step 2: Convert to fraction form
    43,691,981.90/65,537,972.85 = 43,691,981.90/x
  3. Step 3: Cross multiply
    43,691,981.90x = 65,537,972.85 × 43,691,981.90
  4. Step 4: Simplify right side
    43,691,981.90x = 2,863,483,923,524,891.50
  5. Step 5: Solve for x
    x = 2,863,483,923,524,891.50/43,691,981.90
  6. Step 6: Final answer
    x = 65,537,972.85

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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.