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Finding the Fourth Proportional to 61,182.31, 91,769.73 and 36,380.21

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Solution

The fourth proportional to 61,182.31, 91,769.73 and 36,380.21 is: 54,568.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,182.31 : 91,769.73 = 36,380.21 : x
  2. Step 2: Convert to fraction form
    61,182.31/91,769.73 = 36,380.21/x
  3. Step 3: Cross multiply
    61,182.31x = 91,769.73 × 36,380.21
  4. Step 4: Simplify right side
    61,182.31x = 3,338,602,535.03
  5. Step 5: Solve for x
    x = 3,338,602,535.03/61,182.31
  6. Step 6: Final answer
    x = 54,568.10

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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.