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Finding the Fourth Proportional to 347,155.36, 479,063.44 and 196,243.36

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Solution

The fourth proportional to 347,155.36, 479,063.44 and 196,243.36 is: 270,809.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,155.36 : 479,063.44 = 196,243.36 : x
  2. Step 2: Convert to fraction form
    347,155.36/479,063.44 = 196,243.36/x
  3. Step 3: Cross multiply
    347,155.36x = 479,063.44 × 196,243.36
  4. Step 4: Simplify right side
    347,155.36x = 94,013,019,118.76
  5. Step 5: Solve for x
    x = 94,013,019,118.76/347,155.36
  6. Step 6: Final answer
    x = 270,809.64

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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.