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Finding the Fourth Proportional to 13,914.62, 20,871.30 and 4,053.68

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Solution

The fourth proportional to 13,914.62, 20,871.30 and 4,053.68 is: 6,080.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,914.62 : 20,871.30 = 4,053.68 : x
  2. Step 2: Convert to fraction form
    13,914.62/20,871.30 = 4,053.68/x
  3. Step 3: Cross multiply
    13,914.62x = 20,871.30 × 4,053.68
  4. Step 4: Simplify right side
    13,914.62x = 84,605,571.38
  5. Step 5: Solve for x
    x = 84,605,571.38/13,914.62
  6. Step 6: Final answer
    x = 6,080.34

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1.5x scale

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.