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Finding the Fourth Proportional to 534,642.30, 737,736.39 and 319,703.94

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Solution

The fourth proportional to 534,642.30, 737,736.39 and 319,703.94 is: 441,149.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,642.30 : 737,736.39 = 319,703.94 : x
  2. Step 2: Convert to fraction form
    534,642.30/737,736.39 = 319,703.94/x
  3. Step 3: Cross multiply
    534,642.30x = 737,736.39 × 319,703.94
  4. Step 4: Simplify right side
    534,642.30x = 235,857,230,564.38
  5. Step 5: Solve for x
    x = 235,857,230,564.38/534,642.30
  6. Step 6: Final answer
    x = 441,149.59

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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.