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Finding the Fourth Proportional to 48,736.80, 73,109.79 and 13,676.31

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Solution

The fourth proportional to 48,736.80, 73,109.79 and 13,676.31 is: 20,515.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,736.80 : 73,109.79 = 13,676.31 : x
  2. Step 2: Convert to fraction form
    48,736.80/73,109.79 = 13,676.31/x
  3. Step 3: Cross multiply
    48,736.80x = 73,109.79 × 13,676.31
  4. Step 4: Simplify right side
    48,736.80x = 999,872,152.07
  5. Step 5: Solve for x
    x = 999,872,152.07/48,736.80
  6. Step 6: Final answer
    x = 20,515.75

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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.