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Finding the Fourth Proportional to 57,969.40, 87,059.70 and 50,711.80

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Solution

The fourth proportional to 57,969.40, 87,059.70 and 50,711.80 is: 76,160.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,969.40 : 87,059.70 = 50,711.80 : x
  2. Step 2: Convert to fraction form
    57,969.40/87,059.70 = 50,711.80/x
  3. Step 3: Cross multiply
    57,969.40x = 87,059.70 × 50,711.80
  4. Step 4: Simplify right side
    57,969.40x = 4,414,954,094.46
  5. Step 5: Solve for x
    x = 4,414,954,094.46/57,969.40
  6. Step 6: Final answer
    x = 76,160.08

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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.