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Finding the Fourth Proportional to 392,017.20, 540,411.11 and 277,093.09

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Solution

The fourth proportional to 392,017.20, 540,411.11 and 277,093.09 is: 381,983.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,017.20 : 540,411.11 = 277,093.09 : x
  2. Step 2: Convert to fraction form
    392,017.20/540,411.11 = 277,093.09/x
  3. Step 3: Cross multiply
    392,017.20x = 540,411.11 × 277,093.09
  4. Step 4: Simplify right side
    392,017.20x = 149,744,181,638.17
  5. Step 5: Solve for x
    x = 149,744,181,638.17/392,017.20
  6. Step 6: Final answer
    x = 381,983.70

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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.