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Finding the Fourth Proportional to 68,758.40, 103,124.64 and 33,675.68

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Solution

The fourth proportional to 68,758.40, 103,124.64 and 33,675.68 is: 50,507.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,758.40 : 103,124.64 = 33,675.68 : x
  2. Step 2: Convert to fraction form
    68,758.40/103,124.64 = 33,675.68/x
  3. Step 3: Cross multiply
    68,758.40x = 103,124.64 × 33,675.68
  4. Step 4: Simplify right side
    68,758.40x = 3,472,792,376.76
  5. Step 5: Solve for x
    x = 3,472,792,376.76/68,758.40
  6. Step 6: Final answer
    x = 50,507.17

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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.