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Finding the Fourth Proportional to 283,997.96, 391,917.15 and 156,673.55

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Solution

The fourth proportional to 283,997.96, 391,917.15 and 156,673.55 is: 216,209.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,997.96 : 391,917.15 = 156,673.55 : x
  2. Step 2: Convert to fraction form
    283,997.96/391,917.15 = 156,673.55/x
  3. Step 3: Cross multiply
    283,997.96x = 391,917.15 × 156,673.55
  4. Step 4: Simplify right side
    283,997.96x = 61,403,049,236.80
  5. Step 5: Solve for x
    x = 61,403,049,236.80/283,997.96
  6. Step 6: Final answer
    x = 216,209.48

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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.