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Finding the Fourth Proportional to 19,139.58, 26,412 and 11,186.16

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Solution

The fourth proportional to 19,139.58, 26,412 and 11,186.16 is: 15,436.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,139.58 : 26,412 = 11,186.16 : x
  2. Step 2: Convert to fraction form
    19,139.58/26,412 = 11,186.16/x
  3. Step 3: Cross multiply
    19,139.58x = 26,412 × 11,186.16
  4. Step 4: Simplify right side
    19,139.58x = 295,448,857.92
  5. Step 5: Solve for x
    x = 295,448,857.92/19,139.58
  6. Step 6: Final answer
    x = 15,436.54

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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.