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Finding the Fourth Proportional to 569,820.30, 854,730.45 and 320,469.90

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Solution

The fourth proportional to 569,820.30, 854,730.45 and 320,469.90 is: 480,704.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,820.30 : 854,730.45 = 320,469.90 : x
  2. Step 2: Convert to fraction form
    569,820.30/854,730.45 = 320,469.90/x
  3. Step 3: Cross multiply
    569,820.30x = 854,730.45 × 320,469.90
  4. Step 4: Simplify right side
    569,820.30x = 273,915,381,838.46
  5. Step 5: Solve for x
    x = 273,915,381,838.46/569,820.30
  6. Step 6: Final answer
    x = 480,704.85

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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.