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Finding the Fourth Proportional to 283,334.67, 391,008.60 and 154,279.80

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Solution

The fourth proportional to 283,334.67, 391,008.60 and 154,279.80 is: 212,909.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,334.67 : 391,008.60 = 154,279.80 : x
  2. Step 2: Convert to fraction form
    283,334.67/391,008.60 = 154,279.80/x
  3. Step 3: Cross multiply
    283,334.67x = 391,008.60 × 154,279.80
  4. Step 4: Simplify right side
    283,334.67x = 60,324,728,606.28
  5. Step 5: Solve for x
    x = 60,324,728,606.28/283,334.67
  6. Step 6: Final answer
    x = 212,909.80

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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.