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Finding the Fourth Proportional to 352,445.28, 486,361.40 and 191,296.86

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Solution

The fourth proportional to 352,445.28, 486,361.40 and 191,296.86 is: 263,982.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,445.28 : 486,361.40 = 191,296.86 : x
  2. Step 2: Convert to fraction form
    352,445.28/486,361.40 = 191,296.86/x
  3. Step 3: Cross multiply
    352,445.28x = 486,361.40 × 191,296.86
  4. Step 4: Simplify right side
    352,445.28x = 93,039,405,864.86
  5. Step 5: Solve for x
    x = 93,039,405,864.86/352,445.28
  6. Step 6: Final answer
    x = 263,982.56

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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.