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Finding the Fourth Proportional to 57,353.72, 79,137.61 and 34,689.51

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Solution

The fourth proportional to 57,353.72, 79,137.61 and 34,689.51 is: 47,865.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,353.72 : 79,137.61 = 34,689.51 : x
  2. Step 2: Convert to fraction form
    57,353.72/79,137.61 = 34,689.51/x
  3. Step 3: Cross multiply
    57,353.72x = 79,137.61 × 34,689.51
  4. Step 4: Simplify right side
    57,353.72x = 2,745,244,826.75
  5. Step 5: Solve for x
    x = 2,745,244,826.75/57,353.72
  6. Step 6: Final answer
    x = 47,865.16

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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.