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Finding the Fourth Proportional to 68,994.59, 103,491.68 and 19,074.56

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Solution

The fourth proportional to 68,994.59, 103,491.68 and 19,074.56 is: 28,611.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,994.59 : 103,491.68 = 19,074.56 : x
  2. Step 2: Convert to fraction form
    68,994.59/103,491.68 = 19,074.56/x
  3. Step 3: Cross multiply
    68,994.59x = 103,491.68 × 19,074.56
  4. Step 4: Simplify right side
    68,994.59x = 1,974,057,646.83
  5. Step 5: Solve for x
    x = 1,974,057,646.83/68,994.59
  6. Step 6: Final answer
    x = 28,611.78

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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.