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Finding the Fourth Proportional to 392,016.51, 540,410.17 and 277,092.40

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Solution

The fourth proportional to 392,016.51, 540,410.17 and 277,092.40 is: 381,982.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,016.51 : 540,410.17 = 277,092.40 : x
  2. Step 2: Convert to fraction form
    392,016.51/540,410.17 = 277,092.40/x
  3. Step 3: Cross multiply
    392,016.51x = 540,410.17 × 277,092.40
  4. Step 4: Simplify right side
    392,016.51x = 149,743,548,945.95
  5. Step 5: Solve for x
    x = 149,743,548,945.95/392,016.51
  6. Step 6: Final answer
    x = 381,982.76

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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.