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Finding the Fourth Proportional to 57,975.40, 87,068.70 and 50,717.80

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Solution

The fourth proportional to 57,975.40, 87,068.70 and 50,717.80 is: 76,169.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,975.40 : 87,068.70 = 50,717.80 : x
  2. Step 2: Convert to fraction form
    57,975.40/87,068.70 = 50,717.80/x
  3. Step 3: Cross multiply
    57,975.40x = 87,068.70 × 50,717.80
  4. Step 4: Simplify right side
    57,975.40x = 4,415,932,912.86
  5. Step 5: Solve for x
    x = 4,415,932,912.86/57,975.40
  6. Step 6: Final answer
    x = 76,169.08

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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.