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Finding the Fourth Proportional to 139,960.44, 193,147.92 and 76,300.92

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Solution

The fourth proportional to 139,960.44, 193,147.92 and 76,300.92 is: 105,296.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,960.44 : 193,147.92 = 76,300.92 : x
  2. Step 2: Convert to fraction form
    139,960.44/193,147.92 = 76,300.92/x
  3. Step 3: Cross multiply
    139,960.44x = 193,147.92 × 76,300.92
  4. Step 4: Simplify right side
    139,960.44x = 14,737,363,992.09
  5. Step 5: Solve for x
    x = 14,737,363,992.09/139,960.44
  6. Step 6: Final answer
    x = 105,296.64

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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.