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Finding the Fourth Proportional to 618,786.76, 928,180.87 and 169,511.50

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Solution

The fourth proportional to 618,786.76, 928,180.87 and 169,511.50 is: 254,267.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,786.76 : 928,180.87 = 169,511.50 : x
  2. Step 2: Convert to fraction form
    618,786.76/928,180.87 = 169,511.50/x
  3. Step 3: Cross multiply
    618,786.76x = 928,180.87 × 169,511.50
  4. Step 4: Simplify right side
    618,786.76x = 157,337,333,234.96
  5. Step 5: Solve for x
    x = 157,337,333,234.96/618,786.76
  6. Step 6: Final answer
    x = 254,267.45

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Similar ratio
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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.