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Finding the Fourth Proportional to 61,860.97, 92,745.99 and 19,716.79

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Solution

The fourth proportional to 61,860.97, 92,745.99 and 19,716.79 is: 29,560.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,860.97 : 92,745.99 = 19,716.79 : x
  2. Step 2: Convert to fraction form
    61,860.97/92,745.99 = 19,716.79/x
  3. Step 3: Cross multiply
    61,860.97x = 92,745.99 × 19,716.79
  4. Step 4: Simplify right side
    61,860.97x = 1,828,653,208.17
  5. Step 5: Solve for x
    x = 1,828,653,208.17/61,860.97
  6. Step 6: Final answer
    x = 29,560.69

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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.