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Finding the Fourth Proportional to 173,687.80, 260,405.70 and 117,388.60

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Solution

The fourth proportional to 173,687.80, 260,405.70 and 117,388.60 is: 175,997.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,687.80 : 260,405.70 = 117,388.60 : x
  2. Step 2: Convert to fraction form
    173,687.80/260,405.70 = 117,388.60/x
  3. Step 3: Cross multiply
    173,687.80x = 260,405.70 × 117,388.60
  4. Step 4: Simplify right side
    173,687.80x = 30,568,660,555.02
  5. Step 5: Solve for x
    x = 30,568,660,555.02/173,687.80
  6. Step 6: Final answer
    x = 175,997.74

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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.