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Finding the Fourth Proportional to 256,181.16, 353,523.78 and 143,003.64

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Solution

The fourth proportional to 256,181.16, 353,523.78 and 143,003.64 is: 197,341.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,181.16 : 353,523.78 = 143,003.64 : x
  2. Step 2: Convert to fraction form
    256,181.16/353,523.78 = 143,003.64/x
  3. Step 3: Cross multiply
    256,181.16x = 353,523.78 × 143,003.64
  4. Step 4: Simplify right side
    256,181.16x = 50,555,187,366.56
  5. Step 5: Solve for x
    x = 50,555,187,366.56/256,181.16
  6. Step 6: Final answer
    x = 197,341.55

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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.