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Finding the Fourth Proportional to 19,671.64, 27,147.52 and 10,719.52

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Solution

The fourth proportional to 19,671.64, 27,147.52 and 10,719.52 is: 14,793.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,671.64 : 27,147.52 = 10,719.52 : x
  2. Step 2: Convert to fraction form
    19,671.64/27,147.52 = 10,719.52/x
  3. Step 3: Cross multiply
    19,671.64x = 27,147.52 × 10,719.52
  4. Step 4: Simplify right side
    19,671.64x = 291,008,383.59
  5. Step 5: Solve for x
    x = 291,008,383.59/19,671.64
  6. Step 6: Final answer
    x = 14,793.30

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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.