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Finding the Fourth Proportional to 347,451.20, 521,176.80 and 236,859.20

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Solution

The fourth proportional to 347,451.20, 521,176.80 and 236,859.20 is: 355,288.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,451.20 : 521,176.80 = 236,859.20 : x
  2. Step 2: Convert to fraction form
    347,451.20/521,176.80 = 236,859.20/x
  3. Step 3: Cross multiply
    347,451.20x = 521,176.80 × 236,859.20
  4. Step 4: Simplify right side
    347,451.20x = 123,445,519,906.56
  5. Step 5: Solve for x
    x = 123,445,519,906.56/347,451.20
  6. Step 6: Final answer
    x = 355,288.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.