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Finding the Fourth Proportional to 279,628.82, 385,755.84 and 189,016.41

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Solution

The fourth proportional to 279,628.82, 385,755.84 and 189,016.41 is: 260,753.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,628.82 : 385,755.84 = 189,016.41 : x
  2. Step 2: Convert to fraction form
    279,628.82/385,755.84 = 189,016.41/x
  3. Step 3: Cross multiply
    279,628.82x = 385,755.84 × 189,016.41
  4. Step 4: Simplify right side
    279,628.82x = 72,914,184,013.33
  5. Step 5: Solve for x
    x = 72,914,184,013.33/279,628.82
  6. Step 6: Final answer
    x = 260,753.47

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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.