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Finding the Fourth Proportional to 419,725.56, 579,162.85 and 235,938.15

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Solution

The fourth proportional to 419,725.56, 579,162.85 and 235,938.15 is: 325,561.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,725.56 : 579,162.85 = 235,938.15 : x
  2. Step 2: Convert to fraction form
    419,725.56/579,162.85 = 235,938.15/x
  3. Step 3: Cross multiply
    419,725.56x = 579,162.85 × 235,938.15
  4. Step 4: Simplify right side
    419,725.56x = 136,646,611,377.73
  5. Step 5: Solve for x
    x = 136,646,611,377.73/419,725.56
  6. Step 6: Final answer
    x = 325,561.81

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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.