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Finding the Fourth Proportional to 190,720.44, 263,191.44 and 109,047.90

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Solution

The fourth proportional to 190,720.44, 263,191.44 and 109,047.90 is: 150,484.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,720.44 : 263,191.44 = 109,047.90 : x
  2. Step 2: Convert to fraction form
    190,720.44/263,191.44 = 109,047.90/x
  3. Step 3: Cross multiply
    190,720.44x = 263,191.44 × 109,047.90
  4. Step 4: Simplify right side
    190,720.44x = 28,700,473,829.98
  5. Step 5: Solve for x
    x = 28,700,473,829.98/190,720.44
  6. Step 6: Final answer
    x = 150,484.52

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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.