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Finding the Fourth Proportional to 68,752.98, 103,063.86 and 29,255.76

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Solution

The fourth proportional to 68,752.98, 103,063.86 and 29,255.76 is: 43,855.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,752.98 : 103,063.86 = 29,255.76 : x
  2. Step 2: Convert to fraction form
    68,752.98/103,063.86 = 29,255.76/x
  3. Step 3: Cross multiply
    68,752.98x = 103,063.86 × 29,255.76
  4. Step 4: Simplify right side
    68,752.98x = 3,015,211,552.83
  5. Step 5: Solve for x
    x = 3,015,211,552.83/68,752.98
  6. Step 6: Final answer
    x = 43,855.72

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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.