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Finding the Fourth Proportional to 26,686.60, 39,946.86 and 16,805.12

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Solution

The fourth proportional to 26,686.60, 39,946.86 and 16,805.12 is: 25,155.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,686.60 : 39,946.86 = 16,805.12 : x
  2. Step 2: Convert to fraction form
    26,686.60/39,946.86 = 16,805.12/x
  3. Step 3: Cross multiply
    26,686.60x = 39,946.86 × 16,805.12
  4. Step 4: Simplify right side
    26,686.60x = 671,311,576.19
  5. Step 5: Solve for x
    x = 671,311,576.19/26,686.60
  6. Step 6: Final answer
    x = 25,155.38

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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.