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Finding the Fourth Proportional to 47,628.64, 71,437.90 and 19,551.64

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Solution

The fourth proportional to 47,628.64, 71,437.90 and 19,551.64 is: 29,325.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,628.64 : 71,437.90 = 19,551.64 : x
  2. Step 2: Convert to fraction form
    47,628.64/71,437.90 = 19,551.64/x
  3. Step 3: Cross multiply
    47,628.64x = 71,437.90 × 19,551.64
  4. Step 4: Simplify right side
    47,628.64x = 1,396,728,103.16
  5. Step 5: Solve for x
    x = 1,396,728,103.16/47,628.64
  6. Step 6: Final answer
    x = 29,325.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.