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Finding the Fourth Proportional to 357,491.72, 493,344.52 and 196,361.66

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Solution

The fourth proportional to 357,491.72, 493,344.52 and 196,361.66 is: 270,982.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,491.72 : 493,344.52 = 196,361.66 : x
  2. Step 2: Convert to fraction form
    357,491.72/493,344.52 = 196,361.66/x
  3. Step 3: Cross multiply
    357,491.72x = 493,344.52 × 196,361.66
  4. Step 4: Simplify right side
    357,491.72x = 96,873,948,899.10
  5. Step 5: Solve for x
    x = 96,873,948,899.10/357,491.72
  6. Step 6: Final answer
    x = 270,982.36

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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.