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Finding the Fourth Proportional to 393,403.20, 590,103.90 and 168,617.88

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Solution

The fourth proportional to 393,403.20, 590,103.90 and 168,617.88 is: 252,926.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,403.20 : 590,103.90 = 168,617.88 : x
  2. Step 2: Convert to fraction form
    393,403.20/590,103.90 = 168,617.88/x
  3. Step 3: Cross multiply
    393,403.20x = 590,103.90 × 168,617.88
  4. Step 4: Simplify right side
    393,403.20x = 99,502,068,597.73
  5. Step 5: Solve for x
    x = 99,502,068,597.73/393,403.20
  6. Step 6: Final answer
    x = 252,926.43

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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.