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Finding the Fourth Proportional to 554,906.28, 765,771.10 and 385,238.82

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Solution

The fourth proportional to 554,906.28, 765,771.10 and 385,238.82 is: 531,629.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,906.28 : 765,771.10 = 385,238.82 : x
  2. Step 2: Convert to fraction form
    554,906.28/765,771.10 = 385,238.82/x
  3. Step 3: Cross multiply
    554,906.28x = 765,771.10 × 385,238.82
  4. Step 4: Simplify right side
    554,906.28x = 295,004,754,954.10
  5. Step 5: Solve for x
    x = 295,004,754,954.10/554,906.28
  6. Step 6: Final answer
    x = 531,629.87

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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.