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Finding the Fourth Proportional to 57,245.33, 78,971.36 and 38,133.99

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Solution

The fourth proportional to 57,245.33, 78,971.36 and 38,133.99 is: 52,606.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,245.33 : 78,971.36 = 38,133.99 : x
  2. Step 2: Convert to fraction form
    57,245.33/78,971.36 = 38,133.99/x
  3. Step 3: Cross multiply
    57,245.33x = 78,971.36 × 38,133.99
  4. Step 4: Simplify right side
    57,245.33x = 3,011,492,861.86
  5. Step 5: Solve for x
    x = 3,011,492,861.86/57,245.33
  6. Step 6: Final answer
    x = 52,606.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.