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Finding the Fourth Proportional to 396,543.15, 547,238.79 and 235,398.81

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Solution

The fourth proportional to 396,543.15, 547,238.79 and 235,398.81 is: 324,855.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,543.15 : 547,238.79 = 235,398.81 : x
  2. Step 2: Convert to fraction form
    396,543.15/547,238.79 = 235,398.81/x
  3. Step 3: Cross multiply
    396,543.15x = 547,238.79 × 235,398.81
  4. Step 4: Simplify right side
    396,543.15x = 128,819,359,951.84
  5. Step 5: Solve for x
    x = 128,819,359,951.84/396,543.15
  6. Step 6: Final answer
    x = 324,855.85

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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.