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Finding the Fourth Proportional to 618,456.20, 927,587.10 and 219,039.80

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Solution

The fourth proportional to 618,456.20, 927,587.10 and 219,039.80 is: 328,525.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,456.20 : 927,587.10 = 219,039.80 : x
  2. Step 2: Convert to fraction form
    618,456.20/927,587.10 = 219,039.80/x
  3. Step 3: Cross multiply
    618,456.20x = 927,587.10 × 219,039.80
  4. Step 4: Simplify right side
    618,456.20x = 203,178,492,866.58
  5. Step 5: Solve for x
    x = 203,178,492,866.58/618,456.20
  6. Step 6: Final answer
    x = 328,525.27

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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.