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Finding the Fourth Proportional to 71,993.34, 108,054.36 and 71,725.50

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Solution

The fourth proportional to 71,993.34, 108,054.36 and 71,725.50 is: 107,652.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,993.34 : 108,054.36 = 71,725.50 : x
  2. Step 2: Convert to fraction form
    71,993.34/108,054.36 = 71,725.50/x
  3. Step 3: Cross multiply
    71,993.34x = 108,054.36 × 71,725.50
  4. Step 4: Simplify right side
    71,993.34x = 7,750,252,998.18
  5. Step 5: Solve for x
    x = 7,750,252,998.18/71,993.34
  6. Step 6: Final answer
    x = 107,652.36

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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.