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Finding the Fourth Proportional to 353,186.40, 529,779.60 and 339,408.30

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Solution

The fourth proportional to 353,186.40, 529,779.60 and 339,408.30 is: 509,112.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,186.40 : 529,779.60 = 339,408.30 : x
  2. Step 2: Convert to fraction form
    353,186.40/529,779.60 = 339,408.30/x
  3. Step 3: Cross multiply
    353,186.40x = 529,779.60 × 339,408.30
  4. Step 4: Simplify right side
    353,186.40x = 179,811,593,410.68
  5. Step 5: Solve for x
    x = 179,811,593,410.68/353,186.40
  6. Step 6: Final answer
    x = 509,112.45

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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.