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Finding the Fourth Proportional to 18,706.64, 25,816.20 and 10,323.92

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Solution

The fourth proportional to 18,706.64, 25,816.20 and 10,323.92 is: 14,247.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,706.64 : 25,816.20 = 10,323.92 : x
  2. Step 2: Convert to fraction form
    18,706.64/25,816.20 = 10,323.92/x
  3. Step 3: Cross multiply
    18,706.64x = 25,816.20 × 10,323.92
  4. Step 4: Simplify right side
    18,706.64x = 266,524,383.50
  5. Step 5: Solve for x
    x = 266,524,383.50/18,706.64
  6. Step 6: Final answer
    x = 14,247.58

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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.