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Finding the Fourth Proportional to 71,558.60, 107,260.52 and 27,165.72

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Solution

The fourth proportional to 71,558.60, 107,260.52 and 27,165.72 is: 40,719.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,558.60 : 107,260.52 = 27,165.72 : x
  2. Step 2: Convert to fraction form
    71,558.60/107,260.52 = 27,165.72/x
  3. Step 3: Cross multiply
    71,558.60x = 107,260.52 × 27,165.72
  4. Step 4: Simplify right side
    71,558.60x = 2,913,809,253.37
  5. Step 5: Solve for x
    x = 2,913,809,253.37/71,558.60
  6. Step 6: Final answer
    x = 40,719.20

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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.