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Finding the Fourth Proportional to 61,167, 91,763.70 and 19,046.22

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Solution

The fourth proportional to 61,167, 91,763.70 and 19,046.22 is: 28,573.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,167 : 91,763.70 = 19,046.22 : x
  2. Step 2: Convert to fraction form
    61,167/91,763.70 = 19,046.22/x
  3. Step 3: Cross multiply
    61,167x = 91,763.70 × 19,046.22
  4. Step 4: Simplify right side
    61,167x = 1,747,751,618.21
  5. Step 5: Solve for x
    x = 1,747,751,618.21/61,167
  6. Step 6: Final answer
    x = 28,573.44

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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.