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Finding the Fourth Proportional to 592,978.32, 818,310.56 and 321,046.38

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Solution

The fourth proportional to 592,978.32, 818,310.56 and 321,046.38 is: 443,044.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    592,978.32 : 818,310.56 = 321,046.38 : x
  2. Step 2: Convert to fraction form
    592,978.32/818,310.56 = 321,046.38/x
  3. Step 3: Cross multiply
    592,978.32x = 818,310.56 × 321,046.38
  4. Step 4: Simplify right side
    592,978.32x = 262,715,641,398.54
  5. Step 5: Solve for x
    x = 262,715,641,398.54/592,978.32
  6. Step 6: Final answer
    x = 443,044.26

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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.