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Finding the Fourth Proportional to 13,889.45, 20,836.23 and 4,027.45

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Solution

The fourth proportional to 13,889.45, 20,836.23 and 4,027.45 is: 6,041.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,889.45 : 20,836.23 = 4,027.45 : x
  2. Step 2: Convert to fraction form
    13,889.45/20,836.23 = 4,027.45/x
  3. Step 3: Cross multiply
    13,889.45x = 20,836.23 × 4,027.45
  4. Step 4: Simplify right side
    13,889.45x = 83,916,874.51
  5. Step 5: Solve for x
    x = 83,916,874.51/13,889.45
  6. Step 6: Final answer
    x = 6,041.77

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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.