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Finding the Fourth Proportional to 106,940.40, 160,237.80 and 67,426.80

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Solution

The fourth proportional to 106,940.40, 160,237.80 and 67,426.80 is: 101,031.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,940.40 : 160,237.80 = 67,426.80 : x
  2. Step 2: Convert to fraction form
    106,940.40/160,237.80 = 67,426.80/x
  3. Step 3: Cross multiply
    106,940.40x = 160,237.80 × 67,426.80
  4. Step 4: Simplify right side
    106,940.40x = 10,804,322,093.04
  5. Step 5: Solve for x
    x = 10,804,322,093.04/106,940.40
  6. Step 6: Final answer
    x = 101,031.25

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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.