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Finding the Fourth Proportional to 18,553.74, 25,616.03 and 12,191.67

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Solution

The fourth proportional to 18,553.74, 25,616.03 and 12,191.67 is: 16,832.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,553.74 : 25,616.03 = 12,191.67 : x
  2. Step 2: Convert to fraction form
    18,553.74/25,616.03 = 12,191.67/x
  3. Step 3: Cross multiply
    18,553.74x = 25,616.03 × 12,191.67
  4. Step 4: Simplify right side
    18,553.74x = 312,302,123.51
  5. Step 5: Solve for x
    x = 312,302,123.51/18,553.74
  6. Step 6: Final answer
    x = 16,832.30

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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.