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Finding the Fourth Proportional to 19,978,910.56, 27,570,896.67 and 10,811,553.40

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Solution

The fourth proportional to 19,978,910.56, 27,570,896.67 and 10,811,553.40 is: 14,919,943.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,978,910.56 : 27,570,896.67 = 10,811,553.40 : x
  2. Step 2: Convert to fraction form
    19,978,910.56/27,570,896.67 = 10,811,553.40/x
  3. Step 3: Cross multiply
    19,978,910.56x = 27,570,896.67 × 10,811,553.40
  4. Step 4: Simplify right side
    19,978,910.56x = 298,084,221,633,587.19
  5. Step 5: Solve for x
    x = 298,084,221,633,587.19/19,978,910.56
  6. Step 6: Final answer
    x = 14,919,943.74

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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.