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Finding the Fourth Proportional to 574,339.92, 792,575.40 and 319,685.64

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Solution

The fourth proportional to 574,339.92, 792,575.40 and 319,685.64 is: 441,158.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,339.92 : 792,575.40 = 319,685.64 : x
  2. Step 2: Convert to fraction form
    574,339.92/792,575.40 = 319,685.64/x
  3. Step 3: Cross multiply
    574,339.92x = 792,575.40 × 319,685.64
  4. Step 4: Simplify right side
    574,339.92x = 253,374,973,997.26
  5. Step 5: Solve for x
    x = 253,374,973,997.26/574,339.92
  6. Step 6: Final answer
    x = 441,158.56

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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.