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Finding the Fourth Proportional to 43,911.75, 65,878.11 and 14,329.64

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Solution

The fourth proportional to 43,911.75, 65,878.11 and 14,329.64 is: 21,497.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,911.75 : 65,878.11 = 14,329.64 : x
  2. Step 2: Convert to fraction form
    43,911.75/65,878.11 = 14,329.64/x
  3. Step 3: Cross multiply
    43,911.75x = 65,878.11 × 14,329.64
  4. Step 4: Simplify right side
    43,911.75x = 944,009,764.88
  5. Step 5: Solve for x
    x = 944,009,764.88/43,911.75
  6. Step 6: Final answer
    x = 21,497.88

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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.