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Finding the Fourth Proportional to 447,119.60, 670,679.39 and 259,999.88

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Solution

The fourth proportional to 447,119.60, 670,679.39 and 259,999.88 is: 389,999.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,119.60 : 670,679.39 = 259,999.88 : x
  2. Step 2: Convert to fraction form
    447,119.60/670,679.39 = 259,999.88/x
  3. Step 3: Cross multiply
    447,119.60x = 670,679.39 × 259,999.88
  4. Step 4: Simplify right side
    447,119.60x = 174,376,558,215.08
  5. Step 5: Solve for x
    x = 174,376,558,215.08/447,119.60
  6. Step 6: Final answer
    x = 389,999.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.