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Finding the Fourth Proportional to 43,614.88, 65,423.99 and 13,631.88

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Solution

The fourth proportional to 43,614.88, 65,423.99 and 13,631.88 is: 20,448.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,614.88 : 65,423.99 = 13,631.88 : x
  2. Step 2: Convert to fraction form
    43,614.88/65,423.99 = 13,631.88/x
  3. Step 3: Cross multiply
    43,614.88x = 65,423.99 × 13,631.88
  4. Step 4: Simplify right side
    43,614.88x = 891,851,815.53
  5. Step 5: Solve for x
    x = 891,851,815.53/43,614.88
  6. Step 6: Final answer
    x = 20,448.34

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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.