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Finding the Fourth Proportional to 18,072.40, 27,065.40 and 14,616.40

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Solution

The fourth proportional to 18,072.40, 27,065.40 and 14,616.40 is: 21,889.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,072.40 : 27,065.40 = 14,616.40 : x
  2. Step 2: Convert to fraction form
    18,072.40/27,065.40 = 14,616.40/x
  3. Step 3: Cross multiply
    18,072.40x = 27,065.40 × 14,616.40
  4. Step 4: Simplify right side
    18,072.40x = 395,598,712.56
  5. Step 5: Solve for x
    x = 395,598,712.56/18,072.40
  6. Step 6: Final answer
    x = 21,889.66

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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.