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Finding the Fourth Proportional to 61,230.89, 91,760.81 and 33,090.28

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Solution

The fourth proportional to 61,230.89, 91,760.81 and 33,090.28 is: 49,589.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,230.89 : 91,760.81 = 33,090.28 : x
  2. Step 2: Convert to fraction form
    61,230.89/91,760.81 = 33,090.28/x
  3. Step 3: Cross multiply
    61,230.89x = 91,760.81 × 33,090.28
  4. Step 4: Simplify right side
    61,230.89x = 3,036,390,501.07
  5. Step 5: Solve for x
    x = 3,036,390,501.07/61,230.89
  6. Step 6: Final answer
    x = 49,589.19

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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.