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Finding the Fourth Proportional to 347,121.92, 479,015.16 and 196,222.16

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Solution

The fourth proportional to 347,121.92, 479,015.16 and 196,222.16 is: 270,779.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,121.92 : 479,015.16 = 196,222.16 : x
  2. Step 2: Convert to fraction form
    347,121.92/479,015.16 = 196,222.16/x
  3. Step 3: Cross multiply
    347,121.92x = 479,015.16 × 196,222.16
  4. Step 4: Simplify right side
    347,121.92x = 93,993,389,367.95
  5. Step 5: Solve for x
    x = 93,993,389,367.95/347,121.92
  6. Step 6: Final answer
    x = 270,779.18

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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.