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Finding the Fourth Proportional to 373,965.20, 561,142.20 and 163,624.40

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Solution

The fourth proportional to 373,965.20, 561,142.20 and 163,624.40 is: 245,521.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,965.20 : 561,142.20 = 163,624.40 : x
  2. Step 2: Convert to fraction form
    373,965.20/561,142.20 = 163,624.40/x
  3. Step 3: Cross multiply
    373,965.20x = 561,142.20 × 163,624.40
  4. Step 4: Simplify right side
    373,965.20x = 91,816,555,789.68
  5. Step 5: Solve for x
    x = 91,816,555,789.68/373,965.20
  6. Step 6: Final answer
    x = 245,521.66

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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.