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Finding the Fourth Proportional to 61,090.89, 91,559.79 and 33,009.81

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Solution

The fourth proportional to 61,090.89, 91,559.79 and 33,009.81 is: 49,473.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,090.89 : 91,559.79 = 33,009.81 : x
  2. Step 2: Convert to fraction form
    61,090.89/91,559.79 = 33,009.81/x
  3. Step 3: Cross multiply
    61,090.89x = 91,559.79 × 33,009.81
  4. Step 4: Simplify right side
    61,090.89x = 3,022,371,271.54
  5. Step 5: Solve for x
    x = 3,022,371,271.54/61,090.89
  6. Step 6: Final answer
    x = 49,473.35

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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.