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Finding the Fourth Proportional to 175,311.70, 262,967.55 and 121,657.30

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Solution

The fourth proportional to 175,311.70, 262,967.55 and 121,657.30 is: 182,485.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,311.70 : 262,967.55 = 121,657.30 : x
  2. Step 2: Convert to fraction form
    175,311.70/262,967.55 = 121,657.30/x
  3. Step 3: Cross multiply
    175,311.70x = 262,967.55 × 121,657.30
  4. Step 4: Simplify right side
    175,311.70x = 31,991,922,120.62
  5. Step 5: Solve for x
    x = 31,991,922,120.62/175,311.70
  6. Step 6: Final answer
    x = 182,485.95

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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.