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Finding the Fourth Proportional to 194,161.92, 291,312.96 and 67,820.80

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Solution

The fourth proportional to 194,161.92, 291,312.96 and 67,820.80 is: 101,755.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,161.92 : 291,312.96 = 67,820.80 : x
  2. Step 2: Convert to fraction form
    194,161.92/291,312.96 = 67,820.80/x
  3. Step 3: Cross multiply
    194,161.92x = 291,312.96 × 67,820.80
  4. Step 4: Simplify right side
    194,161.92x = 19,757,077,997.57
  5. Step 5: Solve for x
    x = 19,757,077,997.57/194,161.92
  6. Step 6: Final answer
    x = 101,755.68

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1.5x scale

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.