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Finding the Fourth Proportional to 19,879.58, 27,435.24 and 13,153.58

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Solution

The fourth proportional to 19,879.58, 27,435.24 and 13,153.58 is: 18,152.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,879.58 : 27,435.24 = 13,153.58 : x
  2. Step 2: Convert to fraction form
    19,879.58/27,435.24 = 13,153.58/x
  3. Step 3: Cross multiply
    19,879.58x = 27,435.24 × 13,153.58
  4. Step 4: Simplify right side
    19,879.58x = 360,871,624.16
  5. Step 5: Solve for x
    x = 360,871,624.16/19,879.58
  6. Step 6: Final answer
    x = 18,152.88

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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.