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Finding the Fourth Proportional to 65,764.20, 98,451.90 and 61,919.40

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Solution

The fourth proportional to 65,764.20, 98,451.90 and 61,919.40 is: 92,696.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,764.20 : 98,451.90 = 61,919.40 : x
  2. Step 2: Convert to fraction form
    65,764.20/98,451.90 = 61,919.40/x
  3. Step 3: Cross multiply
    65,764.20x = 98,451.90 × 61,919.40
  4. Step 4: Simplify right side
    65,764.20x = 6,096,082,576.86
  5. Step 5: Solve for x
    x = 6,096,082,576.86/65,764.20
  6. Step 6: Final answer
    x = 92,696.07

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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.