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Finding the Fourth Proportional to 392,535.78, 541,727.37 and 222,780.84

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Solution

The fourth proportional to 392,535.78, 541,727.37 and 222,780.84 is: 307,453.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,535.78 : 541,727.37 = 222,780.84 : x
  2. Step 2: Convert to fraction form
    392,535.78/541,727.37 = 222,780.84/x
  3. Step 3: Cross multiply
    392,535.78x = 541,727.37 × 222,780.84
  4. Step 4: Simplify right side
    392,535.78x = 120,686,478,539.59
  5. Step 5: Solve for x
    x = 120,686,478,539.59/392,535.78
  6. Step 6: Final answer
    x = 307,453.45

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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.