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Finding the Fourth Proportional to 57,502.12, 78,928.97 and 51,073.96

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Solution

The fourth proportional to 57,502.12, 78,928.97 and 51,073.96 is: 70,105.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,502.12 : 78,928.97 = 51,073.96 : x
  2. Step 2: Convert to fraction form
    57,502.12/78,928.97 = 51,073.96/x
  3. Step 3: Cross multiply
    57,502.12x = 78,928.97 × 51,073.96
  4. Step 4: Simplify right side
    57,502.12x = 4,031,215,056.62
  5. Step 5: Solve for x
    x = 4,031,215,056.62/57,502.12
  6. Step 6: Final answer
    x = 70,105.50

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.