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Finding the Fourth Proportional to 392,295.35, 588,443.04 and 111,805.31

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Solution

The fourth proportional to 392,295.35, 588,443.04 and 111,805.31 is: 167,707.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,295.35 : 588,443.04 = 111,805.31 : x
  2. Step 2: Convert to fraction form
    392,295.35/588,443.04 = 111,805.31/x
  3. Step 3: Cross multiply
    392,295.35x = 588,443.04 × 111,805.31
  4. Step 4: Simplify right side
    392,295.35x = 65,791,057,975.65
  5. Step 5: Solve for x
    x = 65,791,057,975.65/392,295.35
  6. Step 6: Final answer
    x = 167,707.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.