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Finding the Fourth Proportional to 443,584.20, 665,376.30 and 163,043.40

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Solution

The fourth proportional to 443,584.20, 665,376.30 and 163,043.40 is: 244,565.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,584.20 : 665,376.30 = 163,043.40 : x
  2. Step 2: Convert to fraction form
    443,584.20/665,376.30 = 163,043.40/x
  3. Step 3: Cross multiply
    443,584.20x = 665,376.30 × 163,043.40
  4. Step 4: Simplify right side
    443,584.20x = 108,485,214,231.42
  5. Step 5: Solve for x
    x = 108,485,214,231.42/443,584.20
  6. Step 6: Final answer
    x = 244,565.10

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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.