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Finding the Fourth Proportional to 123,763.94, 170,797.88 and 67,178.96

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Solution

The fourth proportional to 123,763.94, 170,797.88 and 67,178.96 is: 92,708.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,763.94 : 170,797.88 = 67,178.96 : x
  2. Step 2: Convert to fraction form
    123,763.94/170,797.88 = 67,178.96/x
  3. Step 3: Cross multiply
    123,763.94x = 170,797.88 × 67,178.96
  4. Step 4: Simplify right side
    123,763.94x = 11,474,023,948.60
  5. Step 5: Solve for x
    x = 11,474,023,948.60/123,763.94
  6. Step 6: Final answer
    x = 92,708.94

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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.