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Finding the Fourth Proportional to 347,145.60, 479,001.60 and 196,239.36

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Solution

The fourth proportional to 347,145.60, 479,001.60 and 196,239.36 is: 270,776.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,145.60 : 479,001.60 = 196,239.36 : x
  2. Step 2: Convert to fraction form
    347,145.60/479,001.60 = 196,239.36/x
  3. Step 3: Cross multiply
    347,145.60x = 479,001.60 × 196,239.36
  4. Step 4: Simplify right side
    347,145.60x = 93,998,967,422.98
  5. Step 5: Solve for x
    x = 93,998,967,422.98/347,145.60
  6. Step 6: Final answer
    x = 270,776.78

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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.