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Finding the Fourth Proportional to 69,897.93, 104,743.21 and 51,339.21

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Solution

The fourth proportional to 69,897.93, 104,743.21 and 51,339.21 is: 76,932.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,897.93 : 104,743.21 = 51,339.21 : x
  2. Step 2: Convert to fraction form
    69,897.93/104,743.21 = 51,339.21/x
  3. Step 3: Cross multiply
    69,897.93x = 104,743.21 × 51,339.21
  4. Step 4: Simplify right side
    69,897.93x = 5,377,433,654.26
  5. Step 5: Solve for x
    x = 5,377,433,654.26/69,897.93
  6. Step 6: Final answer
    x = 76,932.66

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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.