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Finding the Fourth Proportional to 54,521.60, 81,782.40 and 47,609.60

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Solution

The fourth proportional to 54,521.60, 81,782.40 and 47,609.60 is: 71,414.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,521.60 : 81,782.40 = 47,609.60 : x
  2. Step 2: Convert to fraction form
    54,521.60/81,782.40 = 47,609.60/x
  3. Step 3: Cross multiply
    54,521.60x = 81,782.40 × 47,609.60
  4. Step 4: Simplify right side
    54,521.60x = 3,893,627,351.04
  5. Step 5: Solve for x
    x = 3,893,627,351.04/54,521.60
  6. Step 6: Final answer
    x = 71,414.40

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