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Finding the Fourth Proportional to 256,535.46, 354,019.41 and 143,358.21

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Solution

The fourth proportional to 256,535.46, 354,019.41 and 143,358.21 is: 197,834.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,535.46 : 354,019.41 = 143,358.21 : x
  2. Step 2: Convert to fraction form
    256,535.46/354,019.41 = 143,358.21/x
  3. Step 3: Cross multiply
    256,535.46x = 354,019.41 × 143,358.21
  4. Step 4: Simplify right side
    256,535.46x = 50,751,588,922.86
  5. Step 5: Solve for x
    x = 50,751,588,922.86/256,535.46
  6. Step 6: Final answer
    x = 197,834.60

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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.