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Finding the Fourth Proportional to 17,605.31, 26,408.03 and 4,457.68

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Solution

The fourth proportional to 17,605.31, 26,408.03 and 4,457.68 is: 6,686.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,605.31 : 26,408.03 = 4,457.68 : x
  2. Step 2: Convert to fraction form
    17,605.31/26,408.03 = 4,457.68/x
  3. Step 3: Cross multiply
    17,605.31x = 26,408.03 × 4,457.68
  4. Step 4: Simplify right side
    17,605.31x = 117,718,392.84
  5. Step 5: Solve for x
    x = 117,718,392.84/17,605.31
  6. Step 6: Final answer
    x = 6,686.53

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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.