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Finding the Fourth Proportional to 529,813.20, 794,105.40 and 214,062.80

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Solution

The fourth proportional to 529,813.20, 794,105.40 and 214,062.80 is: 320,845.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,813.20 : 794,105.40 = 214,062.80 : x
  2. Step 2: Convert to fraction form
    529,813.20/794,105.40 = 214,062.80/x
  3. Step 3: Cross multiply
    529,813.20x = 794,105.40 × 214,062.80
  4. Step 4: Simplify right side
    529,813.20x = 169,988,425,419.12
  5. Step 5: Solve for x
    x = 169,988,425,419.12/529,813.20
  6. Step 6: Final answer
    x = 320,845.96

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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.