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Finding the Fourth Proportional to 57,419.69, 79,220.88 and 34,751.43

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Solution

The fourth proportional to 57,419.69, 79,220.88 and 34,751.43 is: 47,945.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,419.69 : 79,220.88 = 34,751.43 : x
  2. Step 2: Convert to fraction form
    57,419.69/79,220.88 = 34,751.43/x
  3. Step 3: Cross multiply
    57,419.69x = 79,220.88 × 34,751.43
  4. Step 4: Simplify right side
    57,419.69x = 2,753,038,865.86
  5. Step 5: Solve for x
    x = 2,753,038,865.86/57,419.69
  6. Step 6: Final answer
    x = 47,945.91

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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.