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Finding the Fourth Proportional to 283,777.97, 391,206.54 and 223,243.40

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Solution

The fourth proportional to 283,777.97, 391,206.54 and 223,243.40 is: 307,755.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,777.97 : 391,206.54 = 223,243.40 : x
  2. Step 2: Convert to fraction form
    283,777.97/391,206.54 = 223,243.40/x
  3. Step 3: Cross multiply
    283,777.97x = 391,206.54 × 223,243.40
  4. Step 4: Simplify right side
    283,777.97x = 87,334,276,135.80
  5. Step 5: Solve for x
    x = 87,334,276,135.80/283,777.97
  6. Step 6: Final answer
    x = 307,755.66

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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.