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Finding the Fourth Proportional to 18,622.92, 25,692.34 and 10,660.89

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Solution

The fourth proportional to 18,622.92, 25,692.34 and 10,660.89 is: 14,707.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,622.92 : 25,692.34 = 10,660.89 : x
  2. Step 2: Convert to fraction form
    18,622.92/25,692.34 = 10,660.89/x
  3. Step 3: Cross multiply
    18,622.92x = 25,692.34 × 10,660.89
  4. Step 4: Simplify right side
    18,622.92x = 273,903,210.58
  5. Step 5: Solve for x
    x = 273,903,210.58/18,622.92
  6. Step 6: Final answer
    x = 14,707.86

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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.