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Finding the Fourth Proportional to 123,912.06, 170,993.07 and 70,195.98

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Solution

The fourth proportional to 123,912.06, 170,993.07 and 70,195.98 is: 96,867.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,912.06 : 170,993.07 = 70,195.98 : x
  2. Step 2: Convert to fraction form
    123,912.06/170,993.07 = 70,195.98/x
  3. Step 3: Cross multiply
    123,912.06x = 170,993.07 × 70,195.98
  4. Step 4: Simplify right side
    123,912.06x = 12,003,026,121.86
  5. Step 5: Solve for x
    x = 12,003,026,121.86/123,912.06
  6. Step 6: Final answer
    x = 96,867.30

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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.