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Finding the Fourth Proportional to 144,721.01, 217,112.70 and 44,879.20

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Solution

The fourth proportional to 144,721.01, 217,112.70 and 44,879.20 is: 67,328.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,721.01 : 217,112.70 = 44,879.20 : x
  2. Step 2: Convert to fraction form
    144,721.01/217,112.70 = 44,879.20/x
  3. Step 3: Cross multiply
    144,721.01x = 217,112.70 × 44,879.20
  4. Step 4: Simplify right side
    144,721.01x = 9,743,843,200.28
  5. Step 5: Solve for x
    x = 9,743,843,200.28/144,721.01
  6. Step 6: Final answer
    x = 67,328.46

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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.