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Finding the Fourth Proportional to 86,681.88, 130,057.31 and 33,359.54

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Solution

The fourth proportional to 86,681.88, 130,057.31 and 33,359.54 is: 50,052.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,681.88 : 130,057.31 = 33,359.54 : x
  2. Step 2: Convert to fraction form
    86,681.88/130,057.31 = 33,359.54/x
  3. Step 3: Cross multiply
    86,681.88x = 130,057.31 × 33,359.54
  4. Step 4: Simplify right side
    86,681.88x = 4,338,652,035.24
  5. Step 5: Solve for x
    x = 4,338,652,035.24/86,681.88
  6. Step 6: Final answer
    x = 50,052.58

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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.