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Finding the Fourth Proportional to 641,890.09, 885,822.24 and 351,514

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Solution

The fourth proportional to 641,890.09, 885,822.24 and 351,514 is: 485,096.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,890.09 : 885,822.24 = 351,514 : x
  2. Step 2: Convert to fraction form
    641,890.09/885,822.24 = 351,514/x
  3. Step 3: Cross multiply
    641,890.09x = 885,822.24 × 351,514
  4. Step 4: Simplify right side
    641,890.09x = 311,378,918,871.36
  5. Step 5: Solve for x
    x = 311,378,918,871.36/641,890.09
  6. Step 6: Final answer
    x = 485,096.94

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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.