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Finding the Fourth Proportional to 618,806.03, 928,209.90 and 169,530.80

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Solution

The fourth proportional to 618,806.03, 928,209.90 and 169,530.80 is: 254,296.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,806.03 : 928,209.90 = 169,530.80 : x
  2. Step 2: Convert to fraction form
    618,806.03/928,209.90 = 169,530.80/x
  3. Step 3: Cross multiply
    618,806.03x = 928,209.90 × 169,530.80
  4. Step 4: Simplify right side
    618,806.03x = 157,360,166,914.92
  5. Step 5: Solve for x
    x = 157,360,166,914.92/618,806.03
  6. Step 6: Final answer
    x = 254,296.43

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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.