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Finding the Fourth Proportional to 18,613.95, 27,926.14 and 7,528.43

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Solution

The fourth proportional to 18,613.95, 27,926.14 and 7,528.43 is: 11,294.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,613.95 : 27,926.14 = 7,528.43 : x
  2. Step 2: Convert to fraction form
    18,613.95/27,926.14 = 7,528.43/x
  3. Step 3: Cross multiply
    18,613.95x = 27,926.14 × 7,528.43
  4. Step 4: Simplify right side
    18,613.95x = 210,239,990.16
  5. Step 5: Solve for x
    x = 210,239,990.16/18,613.95
  6. Step 6: Final answer
    x = 11,294.75

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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.