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Finding the Fourth Proportional to 324,978.44, 487,341.70 and 111,706.25

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Solution

The fourth proportional to 324,978.44, 487,341.70 and 111,706.25 is: 167,516.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,978.44 : 487,341.70 = 111,706.25 : x
  2. Step 2: Convert to fraction form
    324,978.44/487,341.70 = 111,706.25/x
  3. Step 3: Cross multiply
    324,978.44x = 487,341.70 × 111,706.25
  4. Step 4: Simplify right side
    324,978.44x = 54,439,111,059.65
  5. Step 5: Solve for x
    x = 54,439,111,059.65/324,978.44
  6. Step 6: Final answer
    x = 167,516.07

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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.