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Finding the Fourth Proportional to 19,511,489.16, 29,264,953.54 and 7,839,387.44

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Solution

The fourth proportional to 19,511,489.16, 29,264,953.54 and 7,839,387.44 is: 11,758,165.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,511,489.16 : 29,264,953.54 = 7,839,387.44 : x
  2. Step 2: Convert to fraction form
    19,511,489.16/29,264,953.54 = 7,839,387.44/x
  3. Step 3: Cross multiply
    19,511,489.16x = 29,264,953.54 × 7,839,387.44
  4. Step 4: Simplify right side
    19,511,489.16x = 229,419,309,213,659.53
  5. Step 5: Solve for x
    x = 229,419,309,213,659.53/19,511,489.16
  6. Step 6: Final answer
    x = 11,758,165.01

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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.