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Finding the Fourth Proportional to 66,296.26, 91,578.36 and 61,572.34

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Solution

The fourth proportional to 66,296.26, 91,578.36 and 61,572.34 is: 85,052.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,296.26 : 91,578.36 = 61,572.34 : x
  2. Step 2: Convert to fraction form
    66,296.26/91,578.36 = 61,572.34/x
  3. Step 3: Cross multiply
    66,296.26x = 91,578.36 × 61,572.34
  4. Step 4: Simplify right side
    66,296.26x = 5,638,693,918.56
  5. Step 5: Solve for x
    x = 5,638,693,918.56/66,296.26
  6. Step 6: Final answer
    x = 85,052.97

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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.