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Finding the Fourth Proportional to 43,844.36, 65,779.50 and 12,679.88

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Solution

The fourth proportional to 43,844.36, 65,779.50 and 12,679.88 is: 19,023.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,844.36 : 65,779.50 = 12,679.88 : x
  2. Step 2: Convert to fraction form
    43,844.36/65,779.50 = 12,679.88/x
  3. Step 3: Cross multiply
    43,844.36x = 65,779.50 × 12,679.88
  4. Step 4: Simplify right side
    43,844.36x = 834,076,166.46
  5. Step 5: Solve for x
    x = 834,076,166.46/43,844.36
  6. Step 6: Final answer
    x = 19,023.57

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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.