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Finding the Fourth Proportional to 61,374.73, 84,668.52 and 39,862.95

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Solution

The fourth proportional to 61,374.73, 84,668.52 and 39,862.95 is: 54,992.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,374.73 : 84,668.52 = 39,862.95 : x
  2. Step 2: Convert to fraction form
    61,374.73/84,668.52 = 39,862.95/x
  3. Step 3: Cross multiply
    61,374.73x = 84,668.52 × 39,862.95
  4. Step 4: Simplify right side
    61,374.73x = 3,375,136,555.99
  5. Step 5: Solve for x
    x = 3,375,136,555.99/61,374.73
  6. Step 6: Final answer
    x = 54,992.29

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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.