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Finding the Fourth Proportional to 561,350.22, 774,663.55 and 303,227.15

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Solution

The fourth proportional to 561,350.22, 774,663.55 and 303,227.15 is: 418,453.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,350.22 : 774,663.55 = 303,227.15 : x
  2. Step 2: Convert to fraction form
    561,350.22/774,663.55 = 303,227.15/x
  3. Step 3: Cross multiply
    561,350.22x = 774,663.55 × 303,227.15
  4. Step 4: Simplify right side
    561,350.22x = 234,899,015,844.00
  5. Step 5: Solve for x
    x = 234,899,015,844.00/561,350.22
  6. Step 6: Final answer
    x = 418,453.59

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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.