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Finding the Fourth Proportional to 328,920.43, 453,910.19 and 178,017.43

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Solution

The fourth proportional to 328,920.43, 453,910.19 and 178,017.43 is: 245,664.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,920.43 : 453,910.19 = 178,017.43 : x
  2. Step 2: Convert to fraction form
    328,920.43/453,910.19 = 178,017.43/x
  3. Step 3: Cross multiply
    328,920.43x = 453,910.19 × 178,017.43
  4. Step 4: Simplify right side
    328,920.43x = 80,803,924,584.52
  5. Step 5: Solve for x
    x = 80,803,924,584.52/328,920.43
  6. Step 6: Final answer
    x = 245,664.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.