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Finding the Fourth Proportional to 11,980,148.84, 17,978,308.97 and 4,692,704.67

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Solution

The fourth proportional to 11,980,148.84, 17,978,308.97 and 4,692,704.67 is: 7,042,224.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,980,148.84 : 17,978,308.97 = 4,692,704.67 : x
  2. Step 2: Convert to fraction form
    11,980,148.84/17,978,308.97 = 4,692,704.67/x
  3. Step 3: Cross multiply
    11,980,148.84x = 17,978,308.97 × 4,692,704.67
  4. Step 4: Simplify right side
    11,980,148.84x = 84,366,894,450,490.12
  5. Step 5: Solve for x
    x = 84,366,894,450,490.12/11,980,148.84
  6. Step 6: Final answer
    x = 7,042,224.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.