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Finding the Fourth Proportional to 18,401.06, 25,401.12 and 13,926.08

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Solution

The fourth proportional to 18,401.06, 25,401.12 and 13,926.08 is: 19,223.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,401.06 : 25,401.12 = 13,926.08 : x
  2. Step 2: Convert to fraction form
    18,401.06/25,401.12 = 13,926.08/x
  3. Step 3: Cross multiply
    18,401.06x = 25,401.12 × 13,926.08
  4. Step 4: Simplify right side
    18,401.06x = 353,738,029.21
  5. Step 5: Solve for x
    x = 353,738,029.21/18,401.06
  6. Step 6: Final answer
    x = 19,223.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.