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Finding the Fourth Proportional to 19,361.88, 26,719.68 and 11,295.32

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Solution

The fourth proportional to 19,361.88, 26,719.68 and 11,295.32 is: 15,587.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,361.88 : 26,719.68 = 11,295.32 : x
  2. Step 2: Convert to fraction form
    19,361.88/26,719.68 = 11,295.32/x
  3. Step 3: Cross multiply
    19,361.88x = 26,719.68 × 11,295.32
  4. Step 4: Simplify right side
    19,361.88x = 301,807,335.90
  5. Step 5: Solve for x
    x = 301,807,335.90/19,361.88
  6. Step 6: Final answer
    x = 15,587.71

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Why These Related Problems?

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