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Finding the Fourth Proportional to 18,758.49, 25,896.12 and 14,499.93

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Solution

The fourth proportional to 18,758.49, 25,896.12 and 14,499.93 is: 20,017.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,758.49 : 25,896.12 = 14,499.93 : x
  2. Step 2: Convert to fraction form
    18,758.49/25,896.12 = 14,499.93/x
  3. Step 3: Cross multiply
    18,758.49x = 25,896.12 × 14,499.93
  4. Step 4: Simplify right side
    18,758.49x = 375,491,927.27
  5. Step 5: Solve for x
    x = 375,491,927.27/18,758.49
  6. Step 6: Final answer
    x = 20,017.17

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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.