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Finding the Fourth Proportional to 14,171,771.10, 19,557,685.04 and 7,978,945.71

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Solution

The fourth proportional to 14,171,771.10, 19,557,685.04 and 7,978,945.71 is: 11,011,305.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,171,771.10 : 19,557,685.04 = 7,978,945.71 : x
  2. Step 2: Convert to fraction form
    14,171,771.10/19,557,685.04 = 7,978,945.71/x
  3. Step 3: Cross multiply
    14,171,771.10x = 19,557,685.04 × 7,978,945.71
  4. Step 4: Simplify right side
    14,171,771.10x = 156,049,707,193,198.16
  5. Step 5: Solve for x
    x = 156,049,707,193,198.16/14,171,771.10
  6. Step 6: Final answer
    x = 11,011,305.94

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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.