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Finding the Fourth Proportional to 17,355.51, 26,029.99 and 8,461.91

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Solution

The fourth proportional to 17,355.51, 26,029.99 and 8,461.91 is: 12,691.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,355.51 : 26,029.99 = 8,461.91 : x
  2. Step 2: Convert to fraction form
    17,355.51/26,029.99 = 8,461.91/x
  3. Step 3: Cross multiply
    17,355.51x = 26,029.99 × 8,461.91
  4. Step 4: Simplify right side
    17,355.51x = 220,263,432.68
  5. Step 5: Solve for x
    x = 220,263,432.68/17,355.51
  6. Step 6: Final answer
    x = 12,691.27

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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.