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Finding the Fourth Proportional to 392,700.03, 541,911.51 and 239,993.70

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Solution

The fourth proportional to 392,700.03, 541,911.51 and 239,993.70 is: 331,182.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,700.03 : 541,911.51 = 239,993.70 : x
  2. Step 2: Convert to fraction form
    392,700.03/541,911.51 = 239,993.70/x
  3. Step 3: Cross multiply
    392,700.03x = 541,911.51 × 239,993.70
  4. Step 4: Simplify right side
    392,700.03x = 130,055,348,357.49
  5. Step 5: Solve for x
    x = 130,055,348,357.49/392,700.03
  6. Step 6: Final answer
    x = 331,182.43

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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.