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Finding the Fourth Proportional to 493,616.62, 740,367.01 and 138,660.85

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Solution

The fourth proportional to 493,616.62, 740,367.01 and 138,660.85 is: 207,975.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,616.62 : 740,367.01 = 138,660.85 : x
  2. Step 2: Convert to fraction form
    493,616.62/740,367.01 = 138,660.85/x
  3. Step 3: Cross multiply
    493,616.62x = 740,367.01 × 138,660.85
  4. Step 4: Simplify right side
    493,616.62x = 102,659,918,918.56
  5. Step 5: Solve for x
    x = 102,659,918,918.56/493,616.62
  6. Step 6: Final answer
    x = 207,975.00

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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.