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Finding the Fourth Proportional to 256,234.88, 353,589.28 and 143,064.80

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Solution

The fourth proportional to 256,234.88, 353,589.28 and 143,064.80 is: 197,421.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,234.88 : 353,589.28 = 143,064.80 : x
  2. Step 2: Convert to fraction form
    256,234.88/353,589.28 = 143,064.80/x
  3. Step 3: Cross multiply
    256,234.88x = 353,589.28 × 143,064.80
  4. Step 4: Simplify right side
    256,234.88x = 50,586,179,625.34
  5. Step 5: Solve for x
    x = 50,586,179,625.34/256,234.88
  6. Step 6: Final answer
    x = 197,421.13

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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.