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Finding the Fourth Proportional to 13,805.88, 20,711.94 and 5,041.08

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Solution

The fourth proportional to 13,805.88, 20,711.94 and 5,041.08 is: 7,562.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,805.88 : 20,711.94 = 5,041.08 : x
  2. Step 2: Convert to fraction form
    13,805.88/20,711.94 = 5,041.08/x
  3. Step 3: Cross multiply
    13,805.88x = 20,711.94 × 5,041.08
  4. Step 4: Simplify right side
    13,805.88x = 104,410,546.50
  5. Step 5: Solve for x
    x = 104,410,546.50/13,805.88
  6. Step 6: Final answer
    x = 7,562.76

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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.