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Finding the Fourth Proportional to 661,169.89, 991,720.20 and 181,362.54

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Solution

The fourth proportional to 661,169.89, 991,720.20 and 181,362.54 is: 272,034.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,169.89 : 991,720.20 = 181,362.54 : x
  2. Step 2: Convert to fraction form
    661,169.89/991,720.20 = 181,362.54/x
  3. Step 3: Cross multiply
    661,169.89x = 991,720.20 × 181,362.54
  4. Step 4: Simplify right side
    661,169.89x = 179,860,894,441.31
  5. Step 5: Solve for x
    x = 179,860,894,441.31/661,169.89
  6. Step 6: Final answer
    x = 272,034.31

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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.