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Finding the Fourth Proportional to 21,873,896.70, 32,807,734.65 and 7,497,627.90

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Solution

The fourth proportional to 21,873,896.70, 32,807,734.65 and 7,497,627.90 is: 11,245,375.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,873,896.70 : 32,807,734.65 = 7,497,627.90 : x
  2. Step 2: Convert to fraction form
    21,873,896.70/32,807,734.65 = 7,497,627.90/x
  3. Step 3: Cross multiply
    21,873,896.70x = 32,807,734.65 × 7,497,627.90
  4. Step 4: Simplify right side
    21,873,896.70x = 245,980,186,647,636.75
  5. Step 5: Solve for x
    x = 245,980,186,647,636.75/21,873,896.70
  6. Step 6: Final answer
    x = 11,245,375.71

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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.