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Finding the Fourth Proportional to 19,978,892.88, 27,570,872.19 and 10,811,535.63

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Solution

The fourth proportional to 19,978,892.88, 27,570,872.19 and 10,811,535.63 is: 14,919,919.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,978,892.88 : 27,570,872.19 = 10,811,535.63 : x
  2. Step 2: Convert to fraction form
    19,978,892.88/27,570,872.19 = 10,811,535.63/x
  3. Step 3: Cross multiply
    19,978,892.88x = 27,570,872.19 × 10,811,535.63
  4. Step 4: Simplify right side
    19,978,892.88x = 298,083,467,032,361.19
  5. Step 5: Solve for x
    x = 298,083,467,032,361.19/19,978,892.88
  6. Step 6: Final answer
    x = 14,919,919.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.