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Finding the Fourth Proportional to 57,371.88, 86,057.40 and 33,981.50

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Solution

The fourth proportional to 57,371.88, 86,057.40 and 33,981.50 is: 50,972.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,371.88 : 86,057.40 = 33,981.50 : x
  2. Step 2: Convert to fraction form
    57,371.88/86,057.40 = 33,981.50/x
  3. Step 3: Cross multiply
    57,371.88x = 86,057.40 × 33,981.50
  4. Step 4: Simplify right side
    57,371.88x = 2,924,359,538.10
  5. Step 5: Solve for x
    x = 2,924,359,538.10/57,371.88
  6. Step 6: Final answer
    x = 50,972.00

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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.