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Finding the Fourth Proportional to 18,651.24, 27,924.54 and 13,992.93

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Solution

The fourth proportional to 18,651.24, 27,924.54 and 13,992.93 is: 20,950.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,651.24 : 27,924.54 = 13,992.93 : x
  2. Step 2: Convert to fraction form
    18,651.24/27,924.54 = 13,992.93/x
  3. Step 3: Cross multiply
    18,651.24x = 27,924.54 × 13,992.93
  4. Step 4: Simplify right side
    18,651.24x = 390,746,133.50
  5. Step 5: Solve for x
    x = 390,746,133.50/18,651.24
  6. Step 6: Final answer
    x = 20,950.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.