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Finding the Fourth Proportional to 13,978,612.98, 19,296,437.76 and 9,397,591.56

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Solution

The fourth proportional to 13,978,612.98, 19,296,437.76 and 9,397,591.56 is: 12,972,677.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,978,612.98 : 19,296,437.76 = 9,397,591.56 : x
  2. Step 2: Convert to fraction form
    13,978,612.98/19,296,437.76 = 9,397,591.56/x
  3. Step 3: Cross multiply
    13,978,612.98x = 19,296,437.76 × 9,397,591.56
  4. Step 4: Simplify right side
    13,978,612.98x = 181,340,040,631,441.34
  5. Step 5: Solve for x
    x = 181,340,040,631,441.34/13,978,612.98
  6. Step 6: Final answer
    x = 12,972,677.68

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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.