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Finding the Fourth Proportional to 283,992.20, 391,902.90 and 156,667.76

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Solution

The fourth proportional to 283,992.20, 391,902.90 and 156,667.76 is: 216,198.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,992.20 : 391,902.90 = 156,667.76 : x
  2. Step 2: Convert to fraction form
    283,992.20/391,902.90 = 156,667.76/x
  3. Step 3: Cross multiply
    283,992.20x = 391,902.90 × 156,667.76
  4. Step 4: Simplify right side
    283,992.20x = 61,398,549,480.50
  5. Step 5: Solve for x
    x = 61,398,549,480.50/283,992.20
  6. Step 6: Final answer
    x = 216,198.01

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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.