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Finding the Fourth Proportional to 159,211.44, 219,743.18 and 91,274.04

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Solution

The fourth proportional to 159,211.44, 219,743.18 and 91,274.04 is: 125,976.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,211.44 : 219,743.18 = 91,274.04 : x
  2. Step 2: Convert to fraction form
    159,211.44/219,743.18 = 91,274.04/x
  3. Step 3: Cross multiply
    159,211.44x = 219,743.18 × 91,274.04
  4. Step 4: Simplify right side
    159,211.44x = 20,056,847,686.95
  5. Step 5: Solve for x
    x = 20,056,847,686.95/159,211.44
  6. Step 6: Final answer
    x = 125,976.17

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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.