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Finding the Fourth Proportional to 26,796.66, 40,136.49 and 12,916.50

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Solution

The fourth proportional to 26,796.66, 40,136.49 and 12,916.50 is: 19,346.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,796.66 : 40,136.49 = 12,916.50 : x
  2. Step 2: Convert to fraction form
    26,796.66/40,136.49 = 12,916.50/x
  3. Step 3: Cross multiply
    26,796.66x = 40,136.49 × 12,916.50
  4. Step 4: Simplify right side
    26,796.66x = 518,422,973.09
  5. Step 5: Solve for x
    x = 518,422,973.09/26,796.66
  6. Step 6: Final answer
    x = 19,346.55

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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.