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Finding the Fourth Proportional to 71,953.58, 99,323.31 and 54,100.44

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Solution

The fourth proportional to 71,953.58, 99,323.31 and 54,100.44 is: 74,679.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,953.58 : 99,323.31 = 54,100.44 : x
  2. Step 2: Convert to fraction form
    71,953.58/99,323.31 = 54,100.44/x
  3. Step 3: Cross multiply
    71,953.58x = 99,323.31 × 54,100.44
  4. Step 4: Simplify right side
    71,953.58x = 5,373,434,976.13
  5. Step 5: Solve for x
    x = 5,373,434,976.13/71,953.58
  6. Step 6: Final answer
    x = 74,679.19

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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.