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Finding the Fourth Proportional to 339,866.96, 469,021.79 and 186,911.82

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Solution

The fourth proportional to 339,866.96, 469,021.79 and 186,911.82 is: 257,941.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,866.96 : 469,021.79 = 186,911.82 : x
  2. Step 2: Convert to fraction form
    339,866.96/469,021.79 = 186,911.82/x
  3. Step 3: Cross multiply
    339,866.96x = 469,021.79 × 186,911.82
  4. Step 4: Simplify right side
    339,866.96x = 87,665,716,855.84
  5. Step 5: Solve for x
    x = 87,665,716,855.84/339,866.96
  6. Step 6: Final answer
    x = 257,941.28

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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.