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Finding the Fourth Proportional to 199,138.76, 274,811.34 and 109,714.76

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Solution

The fourth proportional to 199,138.76, 274,811.34 and 109,714.76 is: 151,406.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,138.76 : 274,811.34 = 109,714.76 : x
  2. Step 2: Convert to fraction form
    199,138.76/274,811.34 = 109,714.76/x
  3. Step 3: Cross multiply
    199,138.76x = 274,811.34 × 109,714.76
  4. Step 4: Simplify right side
    199,138.76x = 30,150,860,213.38
  5. Step 5: Solve for x
    x = 30,150,860,213.38/199,138.76
  6. Step 6: Final answer
    x = 151,406.29

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1.5x scale

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.