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Finding the Fourth Proportional to 18,978,914.40, 26,191,026.63 and 10,277,087.79

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Solution

The fourth proportional to 18,978,914.40, 26,191,026.63 and 10,277,087.79 is: 14,182,448.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,978,914.40 : 26,191,026.63 = 10,277,087.79 : x
  2. Step 2: Convert to fraction form
    18,978,914.40/26,191,026.63 = 10,277,087.79/x
  3. Step 3: Cross multiply
    18,978,914.40x = 26,191,026.63 × 10,277,087.79
  4. Step 4: Simplify right side
    18,978,914.40x = 269,167,479,986,737.81
  5. Step 5: Solve for x
    x = 269,167,479,986,737.81/18,978,914.40
  6. Step 6: Final answer
    x = 14,182,448.71

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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.