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Finding the Fourth Proportional to 123,963.21, 171,067.95 and 67,374.18

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Solution

The fourth proportional to 123,963.21, 171,067.95 and 67,374.18 is: 92,975.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,963.21 : 171,067.95 = 67,374.18 : x
  2. Step 2: Convert to fraction form
    123,963.21/171,067.95 = 67,374.18/x
  3. Step 3: Cross multiply
    123,963.21x = 171,067.95 × 67,374.18
  4. Step 4: Simplify right side
    123,963.21x = 11,525,562,855.53
  5. Step 5: Solve for x
    x = 11,525,562,855.53/123,963.21
  6. Step 6: Final answer
    x = 92,975.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.