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Finding the Fourth Proportional to 26,491.55, 39,712.61 and 8,949.11

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Solution

The fourth proportional to 26,491.55, 39,712.61 and 8,949.11 is: 13,415.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,491.55 : 39,712.61 = 8,949.11 : x
  2. Step 2: Convert to fraction form
    26,491.55/39,712.61 = 8,949.11/x
  3. Step 3: Cross multiply
    26,491.55x = 39,712.61 × 8,949.11
  4. Step 4: Simplify right side
    26,491.55x = 355,392,271.97
  5. Step 5: Solve for x
    x = 355,392,271.97/26,491.55
  6. Step 6: Final answer
    x = 13,415.31

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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.