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Finding the Fourth Proportional to 256,526.11, 354,003.42 and 143,348.86

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Solution

The fourth proportional to 256,526.11, 354,003.42 and 143,348.86 is: 197,819.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,526.11 : 354,003.42 = 143,348.86 : x
  2. Step 2: Convert to fraction form
    256,526.11/354,003.42 = 143,348.86/x
  3. Step 3: Cross multiply
    256,526.11x = 354,003.42 × 143,348.86
  4. Step 4: Simplify right side
    256,526.11x = 50,745,986,693.10
  5. Step 5: Solve for x
    x = 50,745,986,693.10/256,526.11
  6. Step 6: Final answer
    x = 197,819.97

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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.