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Finding the Fourth Proportional to 78,136.51, 107,821.96 and 44,147.95

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Solution

The fourth proportional to 78,136.51, 107,821.96 and 44,147.95 is: 60,920.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,136.51 : 107,821.96 = 44,147.95 : x
  2. Step 2: Convert to fraction form
    78,136.51/107,821.96 = 44,147.95/x
  3. Step 3: Cross multiply
    78,136.51x = 107,821.96 × 44,147.95
  4. Step 4: Simplify right side
    78,136.51x = 4,760,118,498.98
  5. Step 5: Solve for x
    x = 4,760,118,498.98/78,136.51
  6. Step 6: Final answer
    x = 60,920.54

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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.