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Finding the Fourth Proportional to 18,555,231.17, 27,804,439.42 and 7,766,658.11

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Solution

The fourth proportional to 18,555,231.17, 27,804,439.42 and 7,766,658.11 is: 11,638,096.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,555,231.17 : 27,804,439.42 = 7,766,658.11 : x
  2. Step 2: Convert to fraction form
    18,555,231.17/27,804,439.42 = 7,766,658.11/x
  3. Step 3: Cross multiply
    18,555,231.17x = 27,804,439.42 × 7,766,658.11
  4. Step 4: Simplify right side
    18,555,231.17x = 215,947,574,915,346.72
  5. Step 5: Solve for x
    x = 215,947,574,915,346.72/18,555,231.17
  6. Step 6: Final answer
    x = 11,638,096.71

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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.