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Finding the Fourth Proportional to 68,994.84, 103,639.68 and 49,399.32

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Solution

The fourth proportional to 68,994.84, 103,639.68 and 49,399.32 is: 74,204.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,994.84 : 103,639.68 = 49,399.32 : x
  2. Step 2: Convert to fraction form
    68,994.84/103,639.68 = 49,399.32/x
  3. Step 3: Cross multiply
    68,994.84x = 103,639.68 × 49,399.32
  4. Step 4: Simplify right side
    68,994.84x = 5,119,729,717.02
  5. Step 5: Solve for x
    x = 5,119,729,717.02/68,994.84
  6. Step 6: Final answer
    x = 74,204.53

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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.