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Finding the Fourth Proportional to 618,805.78, 928,209.48 and 169,530.60

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Solution

The fourth proportional to 618,805.78, 928,209.48 and 169,530.60 is: 254,296.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,805.78 : 928,209.48 = 169,530.60 : x
  2. Step 2: Convert to fraction form
    618,805.78/928,209.48 = 169,530.60/x
  3. Step 3: Cross multiply
    618,805.78x = 928,209.48 × 169,530.60
  4. Step 4: Simplify right side
    618,805.78x = 157,359,910,070.09
  5. Step 5: Solve for x
    x = 157,359,910,070.09/618,805.78
  6. Step 6: Final answer
    x = 254,296.12

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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.