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Finding the Fourth Proportional to 574,207.65, 792,398.84 and 319,558.77

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Solution

The fourth proportional to 574,207.65, 792,398.84 and 319,558.77 is: 440,986.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,207.65 : 792,398.84 = 319,558.77 : x
  2. Step 2: Convert to fraction form
    574,207.65/792,398.84 = 319,558.77/x
  3. Step 3: Cross multiply
    574,207.65x = 792,398.84 × 319,558.77
  4. Step 4: Simplify right side
    574,207.65x = 253,217,997,062.03
  5. Step 5: Solve for x
    x = 253,217,997,062.03/574,207.65
  6. Step 6: Final answer
    x = 440,986.81

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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.