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Finding the Fourth Proportional to 218,274.20, 327,411.30 and 173,659.40

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Solution

The fourth proportional to 218,274.20, 327,411.30 and 173,659.40 is: 260,489.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,274.20 : 327,411.30 = 173,659.40 : x
  2. Step 2: Convert to fraction form
    218,274.20/327,411.30 = 173,659.40/x
  3. Step 3: Cross multiply
    218,274.20x = 327,411.30 × 173,659.40
  4. Step 4: Simplify right side
    218,274.20x = 56,858,049,911.22
  5. Step 5: Solve for x
    x = 56,858,049,911.22/218,274.20
  6. Step 6: Final answer
    x = 260,489.10

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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.