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Finding the Fourth Proportional to 61,811.70, 92,717.55 and 33,720.90

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Solution

The fourth proportional to 61,811.70, 92,717.55 and 33,720.90 is: 50,581.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,811.70 : 92,717.55 = 33,720.90 : x
  2. Step 2: Convert to fraction form
    61,811.70/92,717.55 = 33,720.90/x
  3. Step 3: Cross multiply
    61,811.70x = 92,717.55 × 33,720.90
  4. Step 4: Simplify right side
    61,811.70x = 3,126,519,231.80
  5. Step 5: Solve for x
    x = 3,126,519,231.80/61,811.70
  6. Step 6: Final answer
    x = 50,581.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.