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Finding the Fourth Proportional to 140,301.60, 193,620.36 and 76,640.44

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Solution

The fourth proportional to 140,301.60, 193,620.36 and 76,640.44 is: 105,766.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,301.60 : 193,620.36 = 76,640.44 : x
  2. Step 2: Convert to fraction form
    140,301.60/193,620.36 = 76,640.44/x
  3. Step 3: Cross multiply
    140,301.60x = 193,620.36 × 76,640.44
  4. Step 4: Simplify right side
    140,301.60x = 14,839,149,583.36
  5. Step 5: Solve for x
    x = 14,839,149,583.36/140,301.60
  6. Step 6: Final answer
    x = 105,766.08

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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.