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Finding the Fourth Proportional to 26,187.92, 39,288.02 and 8,657.63

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Solution

The fourth proportional to 26,187.92, 39,288.02 and 8,657.63 is: 12,988.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,187.92 : 39,288.02 = 8,657.63 : x
  2. Step 2: Convert to fraction form
    26,187.92/39,288.02 = 8,657.63/x
  3. Step 3: Cross multiply
    26,187.92x = 39,288.02 × 8,657.63
  4. Step 4: Simplify right side
    26,187.92x = 340,140,900.86
  5. Step 5: Solve for x
    x = 340,140,900.86/26,187.92
  6. Step 6: Final answer
    x = 12,988.47

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.