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Finding the Fourth Proportional to 17,988.68, 26,976.54 and 7,601.24

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Solution

The fourth proportional to 17,988.68, 26,976.54 and 7,601.24 is: 11,399.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,988.68 : 26,976.54 = 7,601.24 : x
  2. Step 2: Convert to fraction form
    17,988.68/26,976.54 = 7,601.24/x
  3. Step 3: Cross multiply
    17,988.68x = 26,976.54 × 7,601.24
  4. Step 4: Simplify right side
    17,988.68x = 205,055,154.91
  5. Step 5: Solve for x
    x = 205,055,154.91/17,988.68
  6. Step 6: Final answer
    x = 11,399.12

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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.