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Finding the Fourth Proportional to 419,561.88, 579,214.17 and 326,220.72

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Solution

The fourth proportional to 419,561.88, 579,214.17 and 326,220.72 is: 450,354.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,561.88 : 579,214.17 = 326,220.72 : x
  2. Step 2: Convert to fraction form
    419,561.88/579,214.17 = 326,220.72/x
  3. Step 3: Cross multiply
    419,561.88x = 579,214.17 × 326,220.72
  4. Step 4: Simplify right side
    419,561.88x = 188,951,663,571.60
  5. Step 5: Solve for x
    x = 188,951,663,571.60/419,561.88
  6. Step 6: Final answer
    x = 450,354.70

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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.