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Finding the Fourth Proportional to 574,491.68, 792,829.92 and 319,837.28

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Solution

The fourth proportional to 574,491.68, 792,829.92 and 319,837.28 is: 441,392.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,491.68 : 792,829.92 = 319,837.28 : x
  2. Step 2: Convert to fraction form
    574,491.68/792,829.92 = 319,837.28/x
  3. Step 3: Cross multiply
    574,491.68x = 792,829.92 × 319,837.28
  4. Step 4: Simplify right side
    574,491.68x = 253,576,565,115.42
  5. Step 5: Solve for x
    x = 253,576,565,115.42/574,491.68
  6. Step 6: Final answer
    x = 441,392.93

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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.