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Finding the Fourth Proportional to 635,489.38, 876,971.94 and 345,098.44

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Solution

The fourth proportional to 635,489.38, 876,971.94 and 345,098.44 is: 476,234.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,489.38 : 876,971.94 = 345,098.44 : x
  2. Step 2: Convert to fraction form
    635,489.38/876,971.94 = 345,098.44/x
  3. Step 3: Cross multiply
    635,489.38x = 876,971.94 × 345,098.44
  4. Step 4: Simplify right side
    635,489.38x = 302,641,644,032.91
  5. Step 5: Solve for x
    x = 302,641,644,032.91/635,489.38
  6. Step 6: Final answer
    x = 476,234.00

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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.