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Finding the Fourth Proportional to 19,978,912.22, 27,570,898.92 and 10,811,554.97

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Solution

The fourth proportional to 19,978,912.22, 27,570,898.92 and 10,811,554.97 is: 14,919,945.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,978,912.22 : 27,570,898.92 = 10,811,554.97 : x
  2. Step 2: Convert to fraction form
    19,978,912.22/27,570,898.92 = 10,811,554.97/x
  3. Step 3: Cross multiply
    19,978,912.22x = 27,570,898.92 × 10,811,554.97
  4. Step 4: Simplify right side
    19,978,912.22x = 298,084,289,108,039.12
  5. Step 5: Solve for x
    x = 298,084,289,108,039.12/19,978,912.22
  6. Step 6: Final answer
    x = 14,919,945.89

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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.