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Finding the Fourth Proportional to 161,640.54, 223,055.17 and 89,029.30

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Solution

The fourth proportional to 161,640.54, 223,055.17 and 89,029.30 is: 122,855.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,640.54 : 223,055.17 = 89,029.30 : x
  2. Step 2: Convert to fraction form
    161,640.54/223,055.17 = 89,029.30/x
  3. Step 3: Cross multiply
    161,640.54x = 223,055.17 × 89,029.30
  4. Step 4: Simplify right side
    161,640.54x = 19,858,445,646.48
  5. Step 5: Solve for x
    x = 19,858,445,646.48/161,640.54
  6. Step 6: Final answer
    x = 122,855.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.