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Finding the Fourth Proportional to 618,707.20, 928,060.80 and 543,911.80

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Solution

The fourth proportional to 618,707.20, 928,060.80 and 543,911.80 is: 815,867.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,707.20 : 928,060.80 = 543,911.80 : x
  2. Step 2: Convert to fraction form
    618,707.20/928,060.80 = 543,911.80/x
  3. Step 3: Cross multiply
    618,707.20x = 928,060.80 × 543,911.80
  4. Step 4: Simplify right side
    618,707.20x = 504,783,220,237.44
  5. Step 5: Solve for x
    x = 504,783,220,237.44/618,707.20
  6. Step 6: Final answer
    x = 815,867.70

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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.