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Finding the Fourth Proportional to 57,912.80, 79,909.38 and 34,044.32

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Solution

The fourth proportional to 57,912.80, 79,909.38 and 34,044.32 is: 46,975.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,912.80 : 79,909.38 = 34,044.32 : x
  2. Step 2: Convert to fraction form
    57,912.80/79,909.38 = 34,044.32/x
  3. Step 3: Cross multiply
    57,912.80x = 79,909.38 × 34,044.32
  4. Step 4: Simplify right side
    57,912.80x = 2,720,460,503.72
  5. Step 5: Solve for x
    x = 2,720,460,503.72/57,912.80
  6. Step 6: Final answer
    x = 46,975.12

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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.