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Finding the Fourth Proportional to 57,720.62, 79,667.73 and 33,854.98

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Solution

The fourth proportional to 57,720.62, 79,667.73 and 33,854.98 is: 46,727.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,720.62 : 79,667.73 = 33,854.98 : x
  2. Step 2: Convert to fraction form
    57,720.62/79,667.73 = 33,854.98/x
  3. Step 3: Cross multiply
    57,720.62x = 79,667.73 × 33,854.98
  4. Step 4: Simplify right side
    57,720.62x = 2,697,149,405.80
  5. Step 5: Solve for x
    x = 2,697,149,405.80/57,720.62
  6. Step 6: Final answer
    x = 46,727.66

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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.