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Finding the Fourth Proportional to 568,411.20, 852,179.40 and 319,093.20

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Solution

The fourth proportional to 568,411.20, 852,179.40 and 319,093.20 is: 478,394.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,411.20 : 852,179.40 = 319,093.20 : x
  2. Step 2: Convert to fraction form
    568,411.20/852,179.40 = 319,093.20/x
  3. Step 3: Cross multiply
    568,411.20x = 852,179.40 × 319,093.20
  4. Step 4: Simplify right side
    568,411.20x = 271,924,651,720.08
  5. Step 5: Solve for x
    x = 271,924,651,720.08/568,411.20
  6. Step 6: Final answer
    x = 478,394.25

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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.