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Finding the Fourth Proportional to 57,956.96, 79,979.28 and 34,078.40

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Solution

The fourth proportional to 57,956.96, 79,979.28 and 34,078.40 is: 47,027.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,956.96 : 79,979.28 = 34,078.40 : x
  2. Step 2: Convert to fraction form
    57,956.96/79,979.28 = 34,078.40/x
  3. Step 3: Cross multiply
    57,956.96x = 79,979.28 × 34,078.40
  4. Step 4: Simplify right side
    57,956.96x = 2,725,565,895.55
  5. Step 5: Solve for x
    x = 2,725,565,895.55/57,956.96
  6. Step 6: Final answer
    x = 47,027.41

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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.