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Finding the Fourth Proportional to 71,552.80, 107,329.20 and 61,703.20

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Solution

The fourth proportional to 71,552.80, 107,329.20 and 61,703.20 is: 92,554.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,552.80 : 107,329.20 = 61,703.20 : x
  2. Step 2: Convert to fraction form
    71,552.80/107,329.20 = 61,703.20/x
  3. Step 3: Cross multiply
    71,552.80x = 107,329.20 × 61,703.20
  4. Step 4: Simplify right side
    71,552.80x = 6,622,555,093.44
  5. Step 5: Solve for x
    x = 6,622,555,093.44/71,552.80
  6. Step 6: Final answer
    x = 92,554.80

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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.