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Finding the Fourth Proportional to 61,919.63, 92,851.09 and 19,791.53

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Solution

The fourth proportional to 61,919.63, 92,851.09 and 19,791.53 is: 29,678.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,919.63 : 92,851.09 = 19,791.53 : x
  2. Step 2: Convert to fraction form
    61,919.63/92,851.09 = 19,791.53/x
  3. Step 3: Cross multiply
    61,919.63x = 92,851.09 × 19,791.53
  4. Step 4: Simplify right side
    61,919.63x = 1,837,665,133.27
  5. Step 5: Solve for x
    x = 1,837,665,133.27/61,919.63
  6. Step 6: Final answer
    x = 29,678.23

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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.