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Finding the Fourth Proportional to 61,129.73, 91,676.82 and 23,681.45

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Solution

The fourth proportional to 61,129.73, 91,676.82 and 23,681.45 is: 35,515.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,129.73 : 91,676.82 = 23,681.45 : x
  2. Step 2: Convert to fraction form
    61,129.73/91,676.82 = 23,681.45/x
  3. Step 3: Cross multiply
    61,129.73x = 91,676.82 × 23,681.45
  4. Step 4: Simplify right side
    61,129.73x = 2,171,040,028.99
  5. Step 5: Solve for x
    x = 2,171,040,028.99/61,129.73
  6. Step 6: Final answer
    x = 35,515.29

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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.