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Finding the Fourth Proportional to 541,809.20, 811,936.20 and 398,536.40

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Solution

The fourth proportional to 541,809.20, 811,936.20 and 398,536.40 is: 597,232.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,809.20 : 811,936.20 = 398,536.40 : x
  2. Step 2: Convert to fraction form
    541,809.20/811,936.20 = 398,536.40/x
  3. Step 3: Cross multiply
    541,809.20x = 811,936.20 × 398,536.40
  4. Step 4: Simplify right side
    541,809.20x = 323,586,130,177.68
  5. Step 5: Solve for x
    x = 323,586,130,177.68/541,809.20
  6. Step 6: Final answer
    x = 597,232.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.