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Finding the Fourth Proportional to 18,798.11, 25,939.67 and 10,838.80

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Solution

The fourth proportional to 18,798.11, 25,939.67 and 10,838.80 is: 14,956.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,798.11 : 25,939.67 = 10,838.80 : x
  2. Step 2: Convert to fraction form
    18,798.11/25,939.67 = 10,838.80/x
  3. Step 3: Cross multiply
    18,798.11x = 25,939.67 × 10,838.80
  4. Step 4: Simplify right side
    18,798.11x = 281,154,758.00
  5. Step 5: Solve for x
    x = 281,154,758.00/18,798.11
  6. Step 6: Final answer
    x = 14,956.54

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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.