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Finding the Fourth Proportional to 419,742.96, 579,265.80 and 236,039.34

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Solution

The fourth proportional to 419,742.96, 579,265.80 and 236,039.34 is: 325,745.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,742.96 : 579,265.80 = 236,039.34 : x
  2. Step 2: Convert to fraction form
    419,742.96/579,265.80 = 236,039.34/x
  3. Step 3: Cross multiply
    419,742.96x = 579,265.80 × 236,039.34
  4. Step 4: Simplify right side
    419,742.96x = 136,729,517,116.57
  5. Step 5: Solve for x
    x = 136,729,517,116.57/419,742.96
  6. Step 6: Final answer
    x = 325,745.83

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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.