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Finding the Fourth Proportional to 19,231.65, 26,539.71 and 11,166.87

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Solution

The fourth proportional to 19,231.65, 26,539.71 and 11,166.87 is: 15,410.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,231.65 : 26,539.71 = 11,166.87 : x
  2. Step 2: Convert to fraction form
    19,231.65/26,539.71 = 11,166.87/x
  3. Step 3: Cross multiply
    19,231.65x = 26,539.71 × 11,166.87
  4. Step 4: Simplify right side
    19,231.65x = 296,365,491.41
  5. Step 5: Solve for x
    x = 296,365,491.41/19,231.65
  6. Step 6: Final answer
    x = 15,410.30

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.