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Finding the Fourth Proportional to 17,726.40, 26,583.20 and 8,958.40

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Solution

The fourth proportional to 17,726.40, 26,583.20 and 8,958.40 is: 13,434.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,726.40 : 26,583.20 = 8,958.40 : x
  2. Step 2: Convert to fraction form
    17,726.40/26,583.20 = 8,958.40/x
  3. Step 3: Cross multiply
    17,726.40x = 26,583.20 × 8,958.40
  4. Step 4: Simplify right side
    17,726.40x = 238,142,938.88
  5. Step 5: Solve for x
    x = 238,142,938.88/17,726.40
  6. Step 6: Final answer
    x = 13,434.37

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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.