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Finding the Fourth Proportional to 545,911.62, 753,414.09 and 328,190.78

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Solution

The fourth proportional to 545,911.62, 753,414.09 and 328,190.78 is: 452,936.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,911.62 : 753,414.09 = 328,190.78 : x
  2. Step 2: Convert to fraction form
    545,911.62/753,414.09 = 328,190.78/x
  3. Step 3: Cross multiply
    545,911.62x = 753,414.09 × 328,190.78
  4. Step 4: Simplify right side
    545,911.62x = 247,263,554,093.02
  5. Step 5: Solve for x
    x = 247,263,554,093.02/545,911.62
  6. Step 6: Final answer
    x = 452,936.97

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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.