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Finding the Fourth Proportional to 851,103.60, 1,174,311 and 548,934

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Solution

The fourth proportional to 851,103.60, 1,174,311 and 548,934 is: 757,392.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,103.60 : 1,174,311 = 548,934 : x
  2. Step 2: Convert to fraction form
    851,103.60/1,174,311 = 548,934/x
  3. Step 3: Cross multiply
    851,103.60x = 1,174,311 × 548,934
  4. Step 4: Simplify right side
    851,103.60x = 644,619,234,474
  5. Step 5: Solve for x
    x = 644,619,234,474/851,103.60
  6. Step 6: Final answer
    x = 757,392.21

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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.