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Finding the Fourth Proportional to 17,765.55, 26,645.04 and 6,518.43

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Solution

The fourth proportional to 17,765.55, 26,645.04 and 6,518.43 is: 9,776.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,765.55 : 26,645.04 = 6,518.43 : x
  2. Step 2: Convert to fraction form
    17,765.55/26,645.04 = 6,518.43/x
  3. Step 3: Cross multiply
    17,765.55x = 26,645.04 × 6,518.43
  4. Step 4: Simplify right side
    17,765.55x = 173,683,828.09
  5. Step 5: Solve for x
    x = 173,683,828.09/17,765.55
  6. Step 6: Final answer
    x = 9,776.44

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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.